8" Brass H/H Midpoint ASTM Sieve 1.0mm or No.18 - LAST ONE!
8-inch Diameter Brass Half-Height Frame, according to ASTM E11, Midpoint Sieve, 1.00mm or No.18.
MIDPOINT SIEVES were built and certified to have tolerances 30% better than ASTM/ISO standards for sieve mesh. Midpoint sieves have been discontinued by the manufacturer. QUANTITIES ARE LIMITED.