Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 2017.6-20K-ME Fluorobenzene,20000 µg/mL,MeOH,1mL, Price on request 54007 Chloroacetate Price on request 70199 Hexachloroethane Price on request