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: ------------------------------------------------------------------------
Tolerance
Sieve description -------------------------------------
Direct comparison Sample exchange------------------------------------------------------------------------.064x\3/8\ inch oblong............ 0.2 thn-eq>0.3
percent, mean percent, mean
deviation from deviation from
standard sieve standard sieve
using wheat. using wheat\5/64\x\3/4\ inch slotted......... 0.3 thn-eq>0.5
percent, mean percent, mean
deviation from deviation from
standard sieve standard sieve
using barley. using barley5\5/64\x\3/4\ inch slotted........ 0.5 thn-eq>0.7
percent, mean percent, mean
deviation from deviation from
standard sieve standard sieve
using barley. using barley\6/64\x\3/4\ inch slotted......... 0.7 thn-eq>1.0
percent, mean percent, mean
deviation from deviation from
standard sieve standard sieve
using barley. using barley------------------------------------------------------------------------