Phtase Specifications Color: white or slight yellow Appearance: particle , no delinquency caking Activity of enzyme:min. 5000 U/g, min 10000 U/g, or min 20000 U/g. Mesh size 30 80mesh Loss of drying : max: 10% As content: (mg/kg) max: 10 ug/kg Salmonella: none Period of validity: 12months, under 25 oC 25kg paper bag. P.S : if you want more details, please contact our staff on line or leave a message,we will answer you as soon as possible.