HR2-915-21/Crystal Screen 2 Cryo #21 (F09), 185 ml - 0.075 M Sodium phosphate monobasic monohydrate, 0.075 M Potassium phosphate monobasic, 0.075 M MES monohydrate pH 6.5, 1.5 M Sodium chloride, 25% v/v Glycerol. Please note items from this supplier are non-returnable.