Current through 2024-38, September 18, 2024
A.
Laboratory
organization
The laboratory must:
1. Be an entity that can be held legally
responsible;
2. Carry out its
testing activities in such a way as to meet the requirements of this rule and
to satisfy the needs of clients and the regulatory authorities;
3. Have technical management and personnel
who, irrespective of other responsibilities, have the authority and resources
needed to carry out their duties and to identify the occurrence of departures
from the quality system and to initiate actions to prevent or minimize such
departures;
4. Use personnel
employed by, or under contract to, the laboratory. Where contracted and
additional technical and key support personnel are used, the laboratory must
ensure that such personnel are supervised and competent and that they work in
accordance with the laboratory's quality system;
5. Have a written policy that, as indicated
by signature, ensures management and personnel are free from any undue internal
and external commercial, financial and other pressures, and influences that may
adversely affect the quality of their work or diminish confidence in its
competence, impartiality, judgement or operational integrity;
6. Define the organization and management
structure of the laboratory, its place in any parent organization and the
relationships between quality management, technical operations and support
services;
7. Define the
responsibilities of key personnel in the organization that have an involvement
or influence on the testing, if the laboratory is part of an organization
performing activities other than testing, in order to identify potential
conflicts of interest;
8. Have
policies and procedures to ensure the protection of its clients' confidential
information and proprietary rights, including procedures for protecting the
electronic storage and transmission of results;
9. Maintain records of the relevant
authorization(s), demonstration(s) of capability, educational and professional
qualifications, training, skills and experience of all technical personnel,
including contracted personnel. This information must be readily available and
include the date on which authorization and/or competence is confirmed;
and
10. Maintain initials and
signatures of anyone analyzing or reviewing data so that the records can be
traced back to the individual approving the data.
B.
Duty to notify
1. A laboratory must notify the accreditation
officer in writing within 30 days of a change in the:
a. Name of the laboratory;
b. Physical location, postal mailing address
or electronic mailing address of the laboratory;
c. Owner of the laboratory;
d. Names and telephone numbers of a
designated contact person(s); including the laboratory technical director and
quality assurance officer;
e. Name
of at least one managing agent with signature;
f. Names of supervisory professional staff
responsible for the analyses; or
g.
Major analytical equipment.
2. When there is a change in location or
instrumentation, a laboratory must provide results of proficiency testing
samples or a demonstration of capability, analyzed in the new laboratory
location or analyzed under a change in instrumentation.
C.
Personnel requirements - Laboratory
Technical Director
Each laboratory must appoint a laboratory technical director.
The laboratory technical director is responsible for the technical and
scientific oversight of all laboratory activities. The laboratory technical
director must certify that personnel with appropriate education and technical
background perform all tests for which the laboratory is accredited. Each
laboratory will be accredited only after presentation of documentation to the
MLAP regarding education and work experience.
1. Qualifications for laboratory technical
director of a chemistry laboratory are as follows:
a. A bachelor's degree in chemistry,
environmental science, biological sciences, physical sciences or engineering,
with a minimum of two years' experience in environmental analysis.
b. For laboratories engaged in inorganic
analysis only, excluding metals analysis, the laboratory technical director may
hold an associate's degree in chemistry or environmental science or equivalent
with a minimum of two years' experience performing inorganic environmental
analysis.
2.
Qualifications for laboratory technical director of a bacteriology laboratory
are as follows:
a. A bachelor's degree in
microbiology, biology, chemistry or environmental science, with a minimum of
two years' experience in environmental analysis.
b. For laboratories engaged in
microbiological analysis limited to coliform and heterotrophic plate count
testing, the laboratory technical director may hold an associate's degree in
science or the equivalent, with at least four semester credit hours in
microbiology and one year of experience in environmental analysis.
3. Qualifications for laboratory
technical director of a radiochemistry laboratory are a bachelor's degree in
chemistry or physics with two years' experience, one year of which must be in
the supervision of environmental radiochemistry.
4. A valid treatment plant operator's
certificate or license may be substituted for the above qualifications for a
laboratory technical director of a drinking water or wastewater treatment
facility engaged in the analysis of bacteriology samples or chemistry, other
than radiochemistry, collected within the State. The certificate or license
must meet or exceed the classification for the drinking water or wastewater
treatment facility in which the laboratory is located.
5. When the laboratory engages in more than
one analytical category (chemistry, bacteriology and/or radiochemistry), one or
more persons may complement the laboratory technical director, provided that
each meets the applicable qualifications for the analytical category as
specified in paragraphs (1), (2) and (3) above.
6. An individual is not permitted to be
laboratory technical director of more than one Maine accredited laboratory
without authorization from the MLAP. Circumstances to be considered for
authorization include, but will not be limited to:
a. Operating hours of the
laboratories;
b. Adequacy of
supervision; and
c. Availability of
environmental laboratory services in the area.
D.
Personnel requirements - Quality
Assurance Officer (QAO)
1. Each
laboratory must appoint a QAO, however named. The QAO is the person responsible
for the laboratory's quality assurance program and its
implementation.
2. The QAO must
review laboratory quality control data, conduct annual internal laboratory
audits and notify laboratory management of deficiencies found in the
laboratory's quality system. The QAO must be free from internal and external
influences when evaluating data and conducting audits.
3. The QAO must have documented training
and/or experience in QA and QC procedures and must have knowledge of the
approved analytical methods and quality system requirements. The QAO must
maintain the laboratory's QA documents up to date.
4. The QAO duties and responsibilities may
also be carried out by the laboratory technical director.
5. The QAO must have direct access to
laboratory management.
6. The QAO
should (when possible) have functions independent from laboratory operations
for which they have quality assurance oversight.
E.
Responsibilities of laboratory
management
1. Personnel documentation
Laboratory management must:
a. Ensure the laboratory has sufficient
personnel with the necessary education, training, technical knowledge and
experience for their assigned functions;
b. Specify and document the responsibility,
authority and interrelationships of all personnel, who manage, perform or
verify work affecting the quality of the tests;
c. Establish job descriptions to include the
minimum level of qualifications, experience and basic laboratory skills
necessary for all positions in the laboratory;
d. Appoint a member of staff as QAO (however
named) who, irrespective of other duties and responsibilities, will have
defined responsibility and authority for ensuring that the management system
related to quality is implemented and followed at all times;
e. Appoint a deputy when the laboratory
technical director is absent from the laboratory for more than 15 consecutive
calendar days. The appointed deputy must meet the qualifications for laboratory
technical director. The laboratory management must notify the MLAP in writing
when the absence of the laboratory technical director exceeds 65 consecutive
calendar days; and
f. Authorize
specific personnel to perform particular types of sampling and environmental
testing, issue test reports, give opinions and interpretations and operate
particular types of equipment.
2. Personnel training and supervision
The laboratory management must:
a. Provide adequate supervision of testing
staff, including trainees, by persons familiar with methods and
procedures;
b. Formulate goals with
respect to the education and training skills of the laboratory personnel. The
laboratory must have policies and procedures for identifying training needs and
providing training of personnel. The training program must be relevant to the
present and anticipated tasks of the laboratory staff;
c. Ensure all technical laboratory staff has
demonstrated capability in the activities for which they are responsible;
and
d. Ensure that the training of
the laboratory personnel is kept up to date (on-going) by providing the
following:
(i) Documentation that each
employee has read, understands and uses the latest version of the laboratory's
quality documents;
(ii) Training
documentation on equipment, techniques and/or procedures;
(iii) Training in ethical and legal
responsibilities, as stated in Section
8; and
(iv) Documentation of each analyst's
continued performance at least once per year according to Section
8.
3. Quality control
The laboratory management must:
a. Be responsible for documenting the quality
of all data reported;
b. Ensure
that all personnel are responsible for complying with all QA and QC
requirements that pertain to their organizational and technical function;
and
c. Ensure that all sample
acceptance criteria are verified and samples are logged into the sample
tracking system and are properly labeled and stored.
4. Communication
Laboratory management must:
a. Ensure that appropriate communication
processes are established within the laboratory and that communication takes
place regarding the effectiveness of the laboratory management system;
and
b. Ensure that its personnel
are aware of the relevance and importance of their activities and how they
contribute to the achievement of the objectives of the laboratory management
system.
F.
Internal audits
1. The laboratory
must, at least annually and in accordance with a predetermined schedule and
procedure, conduct internal audits of its activities to verify that its
operations continue to comply with the requirements of the laboratory
management system and this rule. The laboratory's internal audit program must
address all elements of the laboratory management system, including testing
and/or calibration activities.
2.
It is the responsibility of the QAO to plan and organize audits as required by
the schedule and requested by management. Such audits must be carried out by
trained and qualified personnel who are, wherever resources permit, independent
of the activity to be audited.
3.
When audit findings cast doubt on the effectiveness of the operations or on the
correctness or validity of the laboratory's test or calibration results, the
laboratory must take timely corrective action and must notify clients in
writing if investigations show that the laboratory results may have been
affected. The laboratory must:
a. Have a
policy that specifies the time frame for notifying clients of events that cast
doubt on the validity of the results; and
b. Ensure that these actions are discharged
within the agreed-upon time frame.
4. Audit reports must document the focus of
the audit, the audit findings and corrective actions that arise from
them.
5. Follow-up audit activities
must verify and record the implementation and effectiveness of the corrective
action taken.
G.
Management reviews
1. In
accordance with a predetermined schedule and procedure, the laboratory's senior
management must conduct an annual review of the laboratory's management system
and laboratory testing to ensure their continuing suitability and effectiveness
and to introduce necessary changes or improvements. Findings from management
reviews and the actions that arise from them must be recorded. The management
must ensure that those actions are carried out within an appropriate and agreed
time frame. The written management review and management team meeting must be
completed within the first quarter of each calendar year.
2. The review must take account of:
a. The suitability of policies and
procedures;
b. Reports from
managerial and supervisory personnel;
c. The outcome of recent internal
audits;
d. Corrective
actions;
e. Assessments by external
bodies;
f. The results of
interlaboratory comparisons or proficiency tests;
g. Changes in the volume and type of the
work;
h. Client feedback;
i. Complaints;
j. Recommendations for improvement;
and
k. Other relevant factors, such
as QC activities, resources and staff training.
H.
Data integrity training
1. The data integrity training must:
a. Be provided as a formal part of new
employee orientation;
b. Be
provided on an annual basis for all current employees;
c. Be provided in writing and available to
all trainees; and
d. Have a
signature attendance sheet or other form of documentation that demonstrates
that each staff person has received the training and understands their
obligations related to data integrity.
2. Key topics covered during training must
include:
a. The organizational mission and its
relationship to the critical need for honesty and full disclosure in all
analytical reporting, as well as how and when to report data integrity issues
and record keeping;
b. Proper
procedures to ensure data integrity, recognition and prevention of improper
laboratory practices, the promotion of objectivity and impartiality in the
generation and reporting of analytical data;
c. Discussion regarding all data integrity
procedures and documentation, data integrity training documentation and
in-depth data monitoring;
d.
Specific examples of breaches of ethical behavior, referencing current events
in the media, including improper data manipulations, adjustments of instrument
time clocks and inappropriate changes in concentrations of standards;
and
e. An emphasis on the
importance of proper written narration on the part of the analyst with respect
to those cases where analytical data may be useful, but are in one sense or
another partially deficient. The data integrity procedures may also include
written ethics agreements, examples of improper practices (e.g., improper
chromatographic manipulations) and requirements for external ethics program
training. Procedures may also include external resources available to
employees.
3. Senior
managers must acknowledge their support of these procedures by upholding the
spirit and intent of the organization's data integrity procedures and
effectively implementing the specific requirements of the procedures.
4. Employees are required to understand that
any infractions of the laboratory data integrity procedures will result in a
detailed investigation that could lead to severe consequences, including
immediate termination, debarment or civil or criminal prosecution.
I.
Data integrity
investigations
All investigations resulting from data integrity issues are
to be conducted in a confidential manner until they have been completed. These
investigations must be documented, as well as any notifications in writing made
to clients receiving any affected data, within 30 calendar days of
investigation completion. This written notification must include a time frame
for re-issuing affected laboratory reports and associated electronic database
deliverables (EDDs), if applicable. A copy of each written notification must be
provided to the accreditation officer within seven calendar days of submission
to affected clients.
J.
Corrective action
The laboratory must establish a corrective action policy and
procedure and must designate appropriate authorities for implementing
corrective action when nonconforming work or departures from the policies and
procedures in the management system or technical operations have been
identified.
1. Selection and
implementation of corrective actions
a. Where
corrective action is needed, the laboratory must identify potential corrective
actions in a timely manner. It must select and implement the action(s) most
likely to eliminate the problem and to prevent recurrence.
b. Corrective actions must be to a degree
appropriate to the magnitude and the risk of the problem.
c. The laboratory must document and implement
any required changes resulting from corrective action investigations.
d. Corrective action reports must be closed
when corrective action has been completed.
2. Monitoring of corrective actions
The laboratory must monitor the results to ensure that the
corrective actions taken have been effective.
3. Additional audits
Where the identification of nonconformities or departures
casts doubt on the laboratory's compliance with its own policies and
procedures, or on its compliance with this rule, the laboratory must ensure
that the appropriate areas of activity are audited. Such additional audits
often follow the implementation of the corrective actions to confirm their
effectiveness. An additional audit is necessary when a serious issue or risk to
the business is identified.
K.
Demonstration of capability
1. Initial demonstration of capability
a. The laboratory must demonstrate that it
can properly perform all methods before conducting tests. An initial
demonstration of capability must be completed each time there is a change in
instrument, personnel or method.
b.
The demonstration of capability must be performed by spiking a known standard
into a clean matrix which duplicates that used for routine analysis (e.g.,
drinking water, soil). For analytes which do not lend themselves to spiking,
the demonstration of capability may be performed using QC samples.
c. All demonstrations must be documented. All
data applicable to the demonstration must be retained for a minimum of five
years and available for inspection. The laboratory must set reasonable criteria
for acceptability of the demonstration of capability.
d. Prior to adding an analyte to their scope
of accreditation that is not currently found on the laboratory's list of
accredited analytes, the laboratory must perform an initial
evaluation.
2. Procedure
for initial demonstration of capability
a. A
QC sample must be prepared by the laboratory using stock standards that are not
used in instrument calibration (e.g., calibration verification
standard).
b. The analyte(s) must
be diluted in a volume of clean matrix sufficient to prepare four aliquots at
the concentration specified, or if unspecified, to a concentration of the
mid-level standard.
c. At least
four aliquots must be prepared and analyzed according to the test method either
concurrently or over a period of days.
d. Using all of the results, the laboratory
must calculate the mean recovery in the appropriate reporting units and the
sample standard deviations for each parameter of interest must be calculated.
Recovery for each analyte in each aliquot and the calculated standard deviation
must be within the limits specified by the applicable approved method or by the
applicable permit, program or rule. When it is not possible to determine mean
and standard deviations, such as for presence or absence and logarithmic
values, the laboratory must assess performance against established and
documented criteria.
e. It is the
responsibility of the laboratory to document that any other approaches to the
demonstration of capability are adequate. The documentation must be provided
within the laboratory's Quality Manual (e.g., for Bacteriology).
3. Continuing demonstration of
capability
After the initial demonstration of capability has been
completed, the laboratory is required to continue demonstrating method
performance through one of the following:
a. Acceptable performance of a blind
sample;
b. Another demonstration of
capability as described in Section
8(K)(2)(a)
-(e);
c. Successful analysis of a
blind performance sample on a similar method using the same
technology;
d. Analysis of at least
four consecutive laboratory control samples with acceptable levels of precision
and accuracy; or
e. If one of the
above cannot be performed, the analysis of environmental samples that have been
analyzed by another trained analyst with statistically indistinguishable
results.
f. Results of all
continuing demonstration of capability determinations must be documented in
writing.
L.
Sample handling, receipt and acceptance
1. Handling samples
a. A laboratory must have procedures for the
collection, transportation (if a function of the laboratory), receipt,
handling, protection, storage, retention and disposal of samples. The
procedures must include provisions necessary to protect the integrity of the
sample and to protect the interests of the laboratory and the client.
b. A laboratory must have a system for
identifying samples. The sample's identification must be retained throughout
the life of the sample in the laboratory. The identification system must be
designed and operated so as to ensure that samples cannot be confused
physically or when referred to in laboratory documentation. The identification
of samples must accommodate a subdivision of groups of samples and the transfer
of samples between laboratories.
c.
Upon receipt of samples, the condition, including any abnormalities or
departures from specified conditions as described in the laboratory's QA
manual, must be recorded. When there is doubt as to the suitability of a sample
for environmental testing, when a sample does not conform to the description
provided, when an insufficient amount of sample is received or when the
environmental test required is not specified in sufficient detail, the
laboratory must consult the client for further instructions before proceeding
and must maintain a record of the discussion.
d. A laboratory must have procedures and
appropriate facilities for avoiding deterioration, contamination, and loss or
damage to the sample during storage, handling, preparation and
testing.
e. When samples require
storage under specified environmental conditions, the conditions must be
maintained, monitored and recorded. When a sample or a portion of a sample is
to be held secure, a laboratory must have arrangements for storage and security
that protect the condition and integrity of the secured samples and/or sample
portions.
f. Samples, sample
fractions, extracts, leachates and other products of sample preparation must be
kept in storage units, such as cabinets, refrigerators or freezers, which are
separate from the storage units for all standards, reagents, food and other
potentially contaminating sources. Samples must be stored in such a manner as
to prevent contamination between samples.
2. Sample receipt protocols
The following information must be verified and the results
documented:
a. Samples received for
analysis under the Drinking Water Program must be verified and documented per
the following:
i. All samples that require
thermal preservation are considered acceptable if the arrival temperature is
verified and within the range required by either the approved method or by the
applicable permit, program or rule.
ii. Samples that do not arrive at the proper
temperature may be analyzed without client notification, or qualifying the
report for temperature, if the sample is received within a reasonable timeframe
after collection and there is evidence of an attempt to thermally
preserve.
iii. Samples that are not
received shortly after collection (e.g., received through the mail), that do
not arrive at the proper temperature may be analyzed, at the client's
discretion, if the following criteria are met:
(1) The sample arrived with evidence of an
attempt to thermally preserve;
(2)
The client is notified that the sample did not arrive at the proper temperature
and the outcome of the conversation is documented; and
(3) The report is annotated to indicate that
the sample arrived outside of the acceptable range and was run at the client's
request.
b.
Samples received for any programs other than the Drinking Water Program must be
verified and documented per the following:
i.
All samples that require thermal preservation are considered acceptable if the
arrival temperature is verified and within the range required by either the
approved method or by the applicable permit, program or rule.
ii. Sample temperature must be recorded at
the time of sample receipt.
iii.
Samples that do not arrive at the proper temperature may be analyzed at the
client's discretion, if the following criteria are met:
(1) The sample arrived with sufficient
coolant to indicate adequate support for the thermal cooling process;
(2) The client is notified that the sample
did not arrive at the proper temperature and the outcome of the conversation is
documented; and
(3) The report is
annotated to indicate the temperature of the sample at the time of sample
receipt, that the sample arrived outside the acceptable range and was run at
the client's request.
c. All samples that require chemical
preservation are considered acceptable if the laboratory verifies that the
preservation meets the requirements of the approved method. A laboratory must
implement procedures for checking chemical preservation before sample
preparation or analysis, except for methods where postanalysis preservation
checks are required, to ensure that sample integrity is not compromised. When
specified in permit, program or rule, chemical preservation must be verified
upon receipt.
d. A laboratory must
maintain chronological records, either paper-based or electronic, such as a
logbook or database, to document receipt of all samples, including the number
and types of containers received for each field of testing. The records must
include the following:
(i) The client and
project name, if applicable;
(ii)
The date and time of laboratory receipt;
(iii) A unique laboratory-assigned
identification code;
(iv) The
signature, initials or equivalent electronic identification of the person
receiving the samples and making the entries;
(v) The field identification code, which
identifies each container, linked to the laboratory-assigned identification
code in the sample receipt log;
(vi) The date and time of sample collection
linked to the sample container and to the date and time of receipt in the
laboratory;
(vii) The requested
field of testing linked to the laboratory-assigned identification code;
and
(viii) Any comments resulting
from inspection for sample rejection, linked to the laboratory-assigned
identification code.
3. Sample Acceptance Policy
a. A laboratory must have a written sample
acceptance policy that clearly outlines the circumstances under which samples
will be accepted or rejected by the laboratory. Data from samples that do not
meet the laboratory's criteria must be recorded in an unambiguous manner
clearly defining the nature and substance of the deviation from acceptable
procedures.
b. A laboratory's
sample acceptance policy must be made available to sample collection personnel
and must address, at a minimum:
(i)
Documentation on the chain of custody must include sample identification;
location, date and time of collection; collector's name; preservation type;
sample type; and any special remarks concerning the sample;
(ii) Sample labeling, to include unique
identification and a labeling system for the samples with requirements
concerning the durability of the labels (water resistant) and the use of
indelible ink;
(iii) The use of
appropriate sample containers;
(iv)
Adherence to specified holding times;
(v) Adequate sample volume to perform the
requested tests and relevant QC determinations; and
(vi) Procedures to be used when samples show
signs of damage, contamination, inadequate preservation or loss of
integrity.
c. If the
sample does not meet the sample receipt acceptance criteria listed in the
laboratory's QA manual, the laboratory must retain correspondence and records
of conversations concerning the final disposition of rejected samples or fully
document any decision to proceed with the analysis of samples not meeting
acceptance criteria.
d. The report
of samples analyzed without meeting the sample acceptance criteria must
indicate, at a minimum, the condition of the samples on the chain of custody
and the transmittal form or the laboratory receipt documents in addition to
appropriately qualifying the analysis data on the final report.
e. Additional requirements - legal chain of
custody protocols
Legal chain of custody protocols are used for evidentiary or
legal purposes. A laboratory must have a written SOP that describes the
protocols for carrying out legal chain of custody if a client specifies that
the sample is to be used for evidentiary purposes.
M.
Standards, reagents and
bacteriological media
1. Reference
standards that are used in the laboratory must be obtained, when available,
from an accredited third party or a National Metrology Institute (e.g., NIST)
and be traceable to the SI, International System of Units.
2. A laboratory must retain records for all
standards, reagents and bacteriological media. The records must include:
a. Identification of the manufacturer or
vendor;
b. Certificate of analysis
or purity, if supplied;
c. Lot
number;
d. Date of receipt or
preparation;
e. Preparer's
initials, if applicable;
f. Method
of preparation, when prepared in the laboratory;
g. Recommended storage conditions;
and
h. Expiration date after which
the material must not be used unless its reliability is verified by the
laboratory.
3. All
containers of reagents, standards and bacteriological media must be assigned a
unique identification linked to records containing the documentation required
in this section.
4. All reagents,
standards and bacteriological media must be laboratory verified before use.
a. Reagents are to be analyzed by use of a
method blank before use.
b.
Standards are to be verified against a lot number previously determined fit for
use by the laboratory.
c.
Bacteriological media must be verified by positive and negative controls before
use.
5. All water must be
appropriate for use.
a. Reagent water for
chemical analysis:
(i) May be American Society
for Testing Materials (ASTM) Type I, Type II or Type III based on the
appropriateness for the analysis; or
(ii) May be Standard Methods for the
Examination of Water and Wastewater, American Water Works Association, 23rd
Edition, 2017 medium-quality or high-quality water based on the appropriateness
for the analysis.
b.
Results of these analyses must meet the specifications of the required method
and records of analyses must be maintained for five years.
c. Reagent water used for bacteriological
analysis must meet the following requirements:
Test |
Monitoring
Frequency |
Maximum Acceptable
Limit |
Chemical Tests: |
Conductivity |
Monthly* |
<2 µmhos/cm
(µmsiemens/cm) at
25oC |
Total organic carbon |
Monthly |
<1.0 mg/L |
Heavy metals, single (Cd, Cr, Cu, Ni, Pb, and
Zn) |
Annually [DAGGER] |
<0.05 mg/L |
Heavy metals, total |
Annually [DAGGER |
<0.10 mg/L |
Total chlorine residual |
Monthly or with each use |
<0.10 mg/L |
Bacteriological Tests: |
Heterotrophic plate count |
Monthly |
<500 CFU/mL |
Use test (see SM 9020B.5f2) |
For a new source |
Student's t [LESS THAN EQUAL TO] 2.78 |
Water quality test (see SM 9020B.5f1) [DOUBLE
DAGGER] |
Annually |
0.8-3.0 ratio |
*Monthly, if meter is in-line or has a resistivity indicator
light; otherwise with each new batch of reagent water.
[DOUBLE] Or more frequently if nonconformance is
identified.
[DOUBLE DAGGER] This bacteriological quality test is not
needed for Type II water or better, as defined in Standard Methods (18th and
19th Editions), Section
1080 C, or medium-quality water or
better, as defined in Standard Methods (20th,
21st, 22nd and Online
Editions), Section
1080
C.
N.
Calibration of support equipment
1. Scope
This section applies to all devices that may not be the
actual test instrument, but that are necessary to support laboratory
operations, if quantitative results are dependent on their accuracy. Such
devices include, but are not limited to, the following: balances; ovens;
refrigerators; freezers; incubators; water baths; temperature-measuring
devices, including thermometers and thermistors; thermal/pressure sample
preparation devices; autoclaves; and volumetric dispensing devices, such as
Eppendorf or automatic diluter/dispensing devices.
2. Requirements
a. Equipment must be operated by trained
personnel. Up-to-date instructions on the use and maintenance of equipment,
including any relevant manuals provided by the manufacturer of the equipment,
must be readily available for use by the appropriate laboratory
personnel.
b. All equipment must be
properly maintained, including inspection, calibration and cleaning.
Maintenance procedures must be documented. Calibration of balances, weights,
temperature recording devices, light sources and detectors must be appropriate
to the required precision and accuracy of the method.
c. Records must be maintained for each major
component of equipment, including software. The records must include:
(i) The identity of the component of
equipment, including software;
(ii)
The manufacturer's name, type, identification and serial number or other unique
identification;
(iii) Documentation
that equipment complies with the manufacturer's specification;
(iv) The current location within the
laboratory;
(v) The manufacturer's
instructions, if available;
(vi)
Dates, results and copies of reports and certificates of all calibrations,
adjustments and acceptance criteria and the due date of the next calibration;
(vii) The maintenance plan and
maintenance carried out to date, documentation on all routine and non-routine
maintenance activities and reference material verifications;
(viii) Any damage, malfunction, modification
or repair to the equipment;
(ix)
Date received, and date placed in service or the date on which its first use or
repair was recorded; and
(x) If
available, condition when received, such as new, used or
reconditioned.
3. Frequency of calibration
a. All support equipment must be calibrated
at least annually, using references from an accredited third party or a
National Metrology Institute (e.g., NIST) which are traceable to the
SI.
b. On each working day,
balances, ovens, water baths, refrigerators and freezers must be checked in the
expected use range with thermometers from an accredited third party or a
National Metrology Institute (e.g., NIST) which are traceable to the
SI.
c. Mechanical volumetric
dispensing devices including burettes, except Class A glassware, must be
checked for accuracy at least quarterly. All glassware, including glass
microliter syringes used for calibration, must be checked for accuracy and
documented before its first use in the laboratory if the glassware does not
come with a certificate attesting to established accuracy.
d. For chemical and biological tests using an
autoclave, the temperature, cycle time and pressure of each run must be
documented by the use of appropriate chemical indicators, temperature recorders
and pressure gauges.
e. Volumetric
equipment must be calibrated as follows:
(i)
Equipment with movable parts, such as automatic dispensers, dispensers/diluters
and mechanical hand pipettes, must be calibrated quarterly.
(ii) Equipment such as filter funnels,
bottles, non-Class A glassware and other marked containers must be calibrated
once per lot prior to first use.
(iii) The volume of the disposable volumetric
equipment such as sample bottles, disposable pipettes and micropipette tips
must be checked once per lot prior to first use.
f. The accuracy of all temperature
measurement devices must be verified by comparing the reading of each device
with that of a certified reference thermometer (e.g., NIST) which is traceable
to the SI.
(i) The thermometer must be
graduated in degree increments no larger than those of the device whose
accuracy is being verified;
(ii) If
a thermometer graduated in 0.5 °C increments or less differs from the
certified reference thermometer by more than 1°C, its use must be
discontinued;
(iii) The accuracy of
thermometers must be verified as follows:
(1)
Glass and electronic thermometers must be verified annually;
(2) Metal thermometers must be verified
quarterly;
(3) Infrared detection
devices must be verified every six months; and
(4) Certified reference thermometers must be
verified at least once every five years.
(iv) The correction factor and date of
verification of accuracy must be indicated on the thermometers. The laboratory
must maintain a record that includes:
(1)
Identification number of each thermometer;
(2) Temperatures displayed on both the
certified reference thermometer and the thermometer being verified;
(3) Any applicable correction
factor;
(4) Date each check was
performed; and
(5) Signature of the
analyst who performed each check.
4. Acceptance criteria
a. The results of calibrations must be within
the specifications required of the application for which the equipment is
used.
b. The acceptability for use
or continued use must be according to the needs of the analysis or application
for which the equipment is being used.
c. When the results of calibration of support
equipment are not within the required specifications, the laboratory must
remove the equipment from service until repaired.
d. Records must be retained to document
equipment performance.
O.
Calibration of analytical
instruments
1. Scope This section
applies to all devices that are the actual test instrument used to quantify the
test results.
2. Requirements
a. Equipment must be operated by trained
personnel. Up-to-date instructions on the use and maintenance of equipment,
including any relevant manuals provided by the manufacturer of the equipment,
must be readily available for use by the appropriate laboratory
personnel.
b. All equipment must be
properly maintained, including inspection, calibration and cleaning.
Maintenance procedures must be documented. Calibration of instruments must be
appropriate to the required precision and accuracy of the method. Calibrations
must be performed at least annually and must be traceable to appropriate
standards.
c. Records must be
maintained for each major component of equipment, including software. The
records must include the following:
(i) The
identity of the component of equipment, including software;
(ii) The manufacturer's name, type,
identification and serial number or other unique identification;
(iii) Documentation that equipment complies
with the manufacturer's specification;
(iv) Date received and date placed in service
or the date on which its first use or repair was recorded;
(v) If available, condition when received,
such as new, used or reconditioned;
(vi) The current location within the
laboratory;
(vii) The
manufacturer's instructions;
(viii)
Dates, results and copies of reports and certificates of all calibrations,
adjustments and acceptance criteria and the due date of the next
calibration;
(ix) The maintenance
plan and maintenance carried out to date, documentation on all routine and
non-routine maintenance activities and reference material verifications;
and
(x) Any damage, malfunction,
modification or repair to the equipment.
3. Initial calibration
a. Sufficient records must be retained to
permit reconstruction of the instrument calibration, such as calibration date,
approved method identification, instrument, analysis date, each analyte name,
the manual or electronic identification of the analyst performing the test,
concentration and response, calibration curve or response factor or unique
equation or coefficient used to reduce instrument responses to
concentration.
b. Sample results
must be quantitated from the most recent instrument calibration and may not be
quantitated from any earlier instrument calibration verification.
c. All instrument calibrations must be
verified with a standard obtained from a second source such as a different
manufacturer, when available. Traceability must be to a national standard, when
available.
d. Criteria for the
acceptance of an instrument calibration must be established, such as
correlation coefficient or relative standard deviation. The criteria used must
be appropriate to the calibration technique employed and must be documented in
the laboratory's SOP.
e. If allowed
in the permit, program or rule, results of samples outside of the concentration
range established by the calibration must be reported with defined qualifiers,
flags or explanations estimating the quantitative error.
f. The following must occur for methods
employing standardization with a zero point and a single point calibration
standard:
(i) Before the analysis of samples,
the linear range of the instrument must be established by analyzing a series of
standards, one of which must encompass the single point quantitation
level;
(ii) A zero point and a
single point calibration standard must be analyzed with each analytical
batch;
(iii) A standard
corresponding to the RL must be analyzed with each analytical batch and must
meet established acceptance criteria;
(iv) The linearity must be verified at a
frequency established by the method or the manufacturer; and
(v) If allowed in the permit, program or
rule, a sample result within an analytical batch, higher than its associated
single point standard, can be reported if the following conditions are met:
(1) A standard with a concentration at or
above the analyte concentration in a sample must be analyzed and must meet
established acceptance criteria for validating the linearity;
(2) The sample must be diluted such that the
result falls below the single point calibration concentration; or
(3) The data must be reported with an
appropriate data qualifier or an explanation in the narrative of the test
report.
g. If
the instrument calibration results are outside established acceptance criteria,
corrective actions must be performed and all associated samples reanalyzed. If
reanalysis of the samples is not possible, data associated with an unacceptable
instrument calibration must be appropriately qualified on the test
report.
h. Calibration standards
must include concentrations at or below the limit specified in the permit,
program or rule.
i. If an approved
method does not specify the number of calibration standards, the minimum number
is three, one of which must be at the RL, not including blanks or a zero
standard, with the exception of instrument technology for which it has been
established by methodologies and procedures that a zero and a single point
standard are appropriate for calibrations. The laboratory must have an SOP that
documents the protocol for determining the number of points required for the
instrument calibration employed and the acceptance criteria for
calibration.
j. It is prohibited to
remove data points from within a calibration range while still retaining the
extreme ends of the calibration range.
4. Calibration verification
a. When an instrument calibration is not
performed on the day of analysis, the instrument calibration must be verified
before analysis of samples by analyzing a calibration standard with each
batch.
b. If calibration
verification is not described in the approved method, calibration verification
must be repeated at the beginning of each batch, after every tenth sample,
excluding QC samples, and at the end of each batch.
c. Sufficient raw data records must be
retained to permit reconstruction of the calibration verification, such as:
test method; instrument; analysis date; each analyte name, concentration and
response; calibration curve or response factor; or unique equations or
coefficients used to convert instrument responses into concentrations.
Calibration verification records must explicitly connect the verification data
to the instrument calibration.
d.
Criteria for the acceptance of calibration verifications must be established
and evaluated using the same technique used to evaluate the instrument
calibration.
e. If the calibration
verification results obtained are outside established acceptance criteria,
corrective actions must be performed. If routine corrective action procedures
fail to produce a second consecutive (immediate) calibration verification
within acceptance criteria, then the laboratory must either demonstrate
performance after corrective action by performing one successful calibration
verification or perform a new instrument calibration. If the laboratory has not
demonstrated acceptable performance after the corrective action, sample
analyses must not occur until a new instrument calibration is established and
verified. Sample data associated with unacceptable calibration verification may
be reported as qualified data under the following special conditions if allowed
in the permit, program or rule:
(i) When the
acceptance criteria for the calibration verification are exceeded high (high
bias) and all associated samples contain analytes below the RL, those sample
results may be reported.
(ii) When
the acceptance criteria for the calibration verification are exceeded low (low
bias), the sample results may be reported if the concentration exceeds a
maximum regulatory limit as defined by the permit, program or rule.
f. When allowed by permit, program
or rule, verification procedures may result in a set of correction factors. If
correction factors are employed, the laboratory must have procedures to ensure
that copies of all data records, such as in computer software, are correctly
updated.
g. Test equipment,
including both hardware and software, must be safeguarded from adjustments that
would invalidate the test results.
P.
Reporting
1. No accredited or provisionally accredited
laboratory may report analytical results as a MLAP-Accredited laboratory
unless:
a. The laboratory conducted the
analytical measurements at the laboratory's address as stated in its current
certificate;
b. The laboratory
clearly distinguishes in the report between those analyses for which it is
accredited, provisionally accredited or not accredited; and
c. For those analyses for which it is
accredited or provisionally accredited, the laboratory clearly distinguishes in
the report between those analyses that it conducted in accordance with the MLAP
accreditation standards and those that it did not conduct in accordance with
the MLAP accreditation standards.
2. For non-compliance analysis (e.g., private
wells), no accredited or provisionally accredited laboratory may report
analytical results as such, if the criteria required for program accreditation
are not followed (e.g., use of an accredited method, proper sample handling,
acceptable quality control). Analytical results for non-compliance samples that
are generated using non-accredited procedures must be annotated as such on
reports.
3. Analytical results must
be reported accurately, legibly, objectively and according to any specific
instructions in the laboratory's standard operating procedures or quality
assurance manual.
4. The test
report must include the following:
a. A title
(e.g., "Test Report" or "Laboratory Results");
b. The name and address of the laboratory and
the location where the tests were carried out, if different from the address of
the laboratory;
c. The laboratory's
EPA identification number;
d. The
name and telephone number of a contact person;
e. The information in paragraph b above for
the subcontracted laboratory and the phrase, "This report contains data that
were produced by a subcontracted Maine accredited laboratory accredited for the
fields of testing performed," if data were produced by a laboratory other than
the laboratory reporting the results;
f. A unique identification of the test
report, such as a serial number, an identification on each page to ensure that
the page is recognized as a part of the test report and a clear identification
of the end of the test report;
g.
The name of the client and project name, if applicable;
h. Identification of the approved method
used;
i. A description, the
condition and unambiguous identification of the sample, including the client's
identification code;
j. Date and
time of sample collection;
k. The
date and time of receipt of the sample(s) when critical to the validity and
application of the results;
l. Time
of sample preparation and time of sample analysis when critical to the validity
of the sample result;
m. Date of
analysis of the environmental test;
n. The test results with the units of
measurement, when appropriate; whether data are calculated on a dry weight or
an "as received" basis; the reporting or detection limit for each analyte with
appropriate units of measurement; and the counting error for each
radiochemistry sample;
o. The name,
function and signature or equivalent electronic identification of the person
authorizing the test report and the date of issue;
p. A statement to the effect that the results
relate only to the samples;
q. A
statement that the report must not be reproduced, except in full, without the
written approval of the laboratory;
r. Deviations from the SOP, such as failed
QC, additions to or exclusions from the test method and information on specific
test conditions, such as environmental conditions and any nonstandard
conditions that may have affected the quality of results, including the use and
definitions of data qualifiers;
s.
Test results that do not meet the requirement or for which the laboratory is
not accredited, documentation explaining why the result does not meet the
requirements and justification as to why the result was reported; and
t. QC information required by the applicable
permit, program or rule.
5. When the laboratory analyzes samples by a
procedure other than as written, the laboratory records and reports must
include:
a. The sample identification
traceable to the client;
b. The
modification to the procedure;
c.
The reason for the modification; and
d. The client's authorization or
acknowledgment of the modification.
6. When opinions and interpretations are
included, the laboratory must document the basis upon which the opinions and
interpretations have been made. Opinions and interpretations must be clearly
marked as such in test reports.
7.
Electronic reporting of data
a. If electronic
reporting is required by the MLAP or this rule, sample results must be reported
in the electronic format acceptable to the MLAP.
b. If electronic reporting is required,
sample results must be reported in the electronic format acceptable to the
associated program. This includes the reporting of all required laboratory
quality control information and associated acceptance limits.
Q.
Documents and
records
1. Document approval and
issuance
a. All documents issued to personnel
in the laboratory as part of the quality system must be reviewed and approved
for use by authorized personnel prior to issuance. A master list or an
equivalent document control procedure identifying the current revision status
and distribution of documents in the quality system must be established and be
readily available to preclude the use of invalid and/or obsolete
documents.
b. The procedure(s)
adopted must ensure that:
(i) Authorized
editions of appropriate documents are available at all locations where
operations essential to the effective functioning of the laboratory are
performed;
(ii) Documents are
periodically reviewed and where necessary, revised to ensure continuing
suitability and compliance with applicable requirements;
(iii) Invalid or obsolete documents are
promptly removed from all points of issue or use, or otherwise assured against
unintended use; and
(iv) Obsolete
documents retained for either legal or knowledge preservation purposes are
suitably marked.
c.
Quality system documents generated by the laboratory must be uniquely
identified. Such identification must include the date of issue and/or revision
identification, page numbering, total number of pages or a mark to signify the
end of the document and the issuing authority(ies).
2. Document changes
a. Changes to documents must be reviewed and
approved by the same function that performed the original review, unless
specifically designated otherwise. The designated personnel must have access to
pertinent background information upon which to base their review and
approval.
b. Where practical, the
altered or new text must be identified in the document or the appropriate
attachments.
c. If the laboratory's
documentation control system allows for the amendment of documents by hand,
pending the reissuance of the documents, the procedures and authorities for
such amendments must be defined. Amendments must be clearly marked, initialed
and dated. A revised document must be formally reissued as soon as
practical.
d. Procedures must be
established to describe how changes in documents maintained in computerized
systems are made and controlled.
e.
The record-keeping system must allow historical reconstruction of all
laboratory activities that produced the analytical data. This requirement also
applies to interlaboratory transfers of samples or extracts and the data
resulting from the analysis of the samples or extracts.
f. Unless otherwise required by permit,
program or rule, all records must be retained for a minimum of five years after
generation of the last entry in the record. All information required for the
historical reconstruction of the data must be maintained by the laboratory. If
records are retained only in electronic form, the hardware and software
required for the retrieval of electronic records must be retained for the same
time period as the records to be retrieved.
g. The records must include the identity of
personnel designated by the laboratory as responsible for the task performed,
as described in the person's job description. The laboratory must retain
records of the signatures and initials of designated personnel.
h. All information relating to the laboratory
facilities, equipment, analytical test methods and related laboratory
activities, such as sample receipt, sample preparation or data verification,
must be documented.
i. The
record-keeping system must allow for the retrieval of all working files and
archived records for inspection and verification purposes, including, but not
limited to, the systematic naming of electronic files.
j. All records must be signed or initialed by
personnel designated by the laboratory as responsible for the task performed.
All changes must be clearly indicated in the records. The laboratory must have
procedures for recording changes and identifying the personnel making the
change.
k. All observations used to
calculate the final result must be recorded immediately. If the record is
handwritten, the record must be legible and in permanent ink.
l. Entries in records must not be obliterated
by methods such as erasures, overwritten files or markings. All corrections to
records on paper must be made by one line marked through the error. The
individual making the correction must sign or initial and date the handwritten
or electronic correction.
m. A
laboratory must maintain a record-keeping system that includes procedures for
protecting the integrity and security of the data.
n. A laboratory must supply any documentation
or data within seven calendar days of the date that the accreditation officer
requests the information.