Iowa Administrative Code
Agency 21 - Agriculture and Land Stewardship Department
Chapter 43 - Fertilizers and Agricultural Lime
Rule 21-43.31 - Determination of Ecce

Universal Citation: IA Admin Code 21-43.31

Current through Register Vol. 47, No. 6, September 18, 2024

Agricultural liming material or specialty limestone offered for sale, sold or otherwise distributed in this state shall be analyzed on the basis of the number of pounds of effective calcium carbonate equivalent per ton, using the method set forth in this rule.

(1) A fineness factor shall be determined as follows:

a. Multiply the percent of the total material passing the number 4 sieve by one-tenth.

b. Multiply the percent of the total material passing the number 8 sieve by three-tenths.

c. Multiply the percent of the total material passing the number 60 sieve by six-tenths. Add the results obtained from paragraph"a, " "b " and"c " of this subrule to obtain the fineness factor.

(2) Multiply the fineness factor obtained by using the method in subrule 43.31(1) by the percent of calcium carbonate equivalent in the material to obtain the percent of ECCE.

(3) The percent of ECCE obtained in subrule 43.31(2) shall be reduced by the percent of moisture contained in the sample.

(4) Multiply 2,000 pounds by the percent ECCE obtained in subrule 43.31(3) to determine the number of pounds of ECCE per ton of agricultural liming material or specialty limestone.

Disclaimer: These regulations may not be the most recent version. Iowa may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.