California Code of Regulations
Title 3 - Food and Agriculture
Division 3 - Economics
Chapter 1 - Fruit and Vegetable Standardization
Subchapter 4 - Fresh Fruits, Nuts and Vegetables
Article 25 - Table Grapes and Raisins
Section 1436.5 - Table Grapes, Method of Testing
Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) All grapes in the sample shall be completely crushed without unnecessary crushing of the stems. The juice shall be poured through a sieve or metal screen strainer that will permit the juice to escape rapidly and at the same time not permit, under pressure, any pulp or solids to go through. In no case shall the screen or sieve be less than 8 mesh per lineal inch.
(b) When making a soluble solids test, a temperature compensated hand refractometer shall be used, the juice shall be thoroughly mixed and a small sample of the juice shall be placed upon the prism and read immediately to avoid evaporation. When the hand refractometer is used as a dipping instrument, the juice shall be thoroughly mixed and the refractometer shall be immersed to a depth that will ensure complete coverage of the prism for a period of 2 to 3 minutes for temperature equilibrium prior to reading.
(c) Prior to each grape season, hand refractometers shall be checked for optical accuracy by using a standard solution. If the instrument is not accurate, it shall not be used in any official testing procedure.
(d) When a test has been completed, the juice shall be drained or dried from all equipment before the juice from a subsequent test is used. The refractometer shall be washed and dried after each use.
1. New
section filed 5-14-68 as an emergency; effective upon filing. Certificate of
Compliance included (Register 68, No. 19). For history of former section, see
Register 67, No. 48.
2. Amendment filed 5-23-69 as an emergency;
effective upon filing. Certificate of Compliance included (Register 69, No.
21).
3. Renumbering from Section
1426.1 filed 1-21-75; effective
thirtieth day thereafter (Register 75, No. 4).
4. Amendment filed
7-18-83; effective upon filing pursuant to Government Code Section
11346.2(d)
(Register 83, No. 30).
Note: Authority cited: Sections 407, 42681 and 42684, Food and Agricultural Code. Reference: Section 42941, Food and Agricultural Code.
