Silicon (Si) Back Catalog number: 56014 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4528-SET ASTM D 5291, Set of standards Standards suitable for calibration for C,H,N of petroleum products: ASTM D5291grade Acetanilide, 99+% Atropine (sulphate monohydrate), 98.5% Benzoic acid, 99.6% Cystine, 99% Diphenyl, 99% EDTA, 99.0% Imidazol, 99+% N Price on request T792065 4-(Trifluoromethyl)-3-Pyridinecarboxylic Acid, 100mg Price on request 677904 Edifenphos, 10 µg/ml, Acetonitrile, 10ml Price on request