Standard : EN 451-2, ASTM C 430The apparatus, used for determining the fly ash fineness by wet sieving.Comprises;a special stainless steel sieve, 0.045 mm opening,a spray nozzle 17.5 mm dia. with 17 holes 0.5 mm dia oriented ans spaced conforming to the specifications, a pressure gauge 80 mm dia. and fittings for connection to the water s..

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