Internal Standard for AB SIM Back Catalog number: 94541 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673686 Pyrazophos, 100 µg/ml, Ethyl acetate, 5ml Price on request C16972720 Spectinomycin sulfate hydrate, certified, 0.1g Price on request 58047 Silver (Ag) Price on request