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Ottawa Graded Test Sand for Cube Molds



STANDARD


ASTM C778,C109


DESCRIPTION


Natural silica sand graded to retain 98% on a No. 100 (150µ) sieve, 75% on a No. 50 (300µ) ,30% on a No. 40 (425µ) and, 2% on a No. 30 (600µ). Specific gravity is 2.65. Supplied in  50 lbs. (22.7kg)  boxes.