HR2-917-40/Natrix 2 #40 (H04), 185 ml - 0.08 M Potassium chloride, 0.02 M Magnesium chloride hexahydrate, 0.04 M Sodium cacodylate trihydrate pH 7.0, 50% v/v (+/-)-2-Methyl-2,4-pentanediol, 0.012 M Spermine tetrahydrochloride. Please note items from this supplier are non-returnable.