10 320293600 PUMICE POWDER: PHYSICAL FORM:POWDER;SPECIAL FEATURES:A COARSE POWDER;NOT LESS THAN 95 P CT PASSES THROUGH A NO.60 SIEVE & NOT MORE THAN 5 PCT THROUGH A NO.200 S IEVE;BAG OF 1 KG;COLLOQUIAL NAME:PUMICE POWDER KG 45