Title 7

SECTION 801.8

801.8 Tolerances for sieves.

§ 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
5 5/64 × 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