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Title 7: Agriculture
Subtitle B: Regulations of the Department of Agriculture (Continued)
CHAPTER VIII: GRAIN INSPECTION, PACKERS AND STOCKYARD ADMINISTRATION (FEDERAL GRAIN INSPECTION SERVICE), DEPARTMENT OF AGRICULTURE
PART 801: OFFICIAL PERFORMANCE REQUIREMENTS FOR GRAIN INSPECTION EQUIPMENT
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 |
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