... service4)Prompt delivery, normally in 10 days after payment 5)Sample is available for quality testSpecification: ItemIndexTop gradeFirst gradeQualified ... productCa,%6.5±0.56.5±0.66.5±0.7Free acid (as Stearic Acid), % ≤ ... C149~155≥140≥125Fineness on 0.075mm test sieve, % ≥99.599.0Mechanical impurity (0.1—0.6mm) granules ≤6612Bulk ...