7 C.F.R. § 801.8

Current through October 31, 2024
Section 801.8 - Tolerances for sieves

The maintenance tolerances for sieves used in performing official inspection services shall be:

(a) Thickness of metal: ±0.0015 inch.
(b) Accuracy of perforation: ±0.001 inch from design specification.
(c) Sieving accuracy:

Sieve description Tolerance
Direct comparison Sample exchange
.064 * 3/8 inch oblong±0.2 percent, mean deviation from standard sieve using wheat±0.3 percent, mean deviation from standard sieve using wheat
5/64 * 3/4 inch slotted±0.3 percent, mean deviation from standard sieve using barley±0.5 percent, mean deviation from standard sieve using barley
55/64 * 3/4 inch slotted±0.5 percent, mean deviation from standard sieve using barley±0.7 percent, mean deviation from standard sieve using barley
6/64 * 3/4 inch slotted±0.7 percent, mean deviation from standard sieve using barley±1.0 percent, mean deviation from standard sieve using barley

7 C.F.R. §801.8