Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 94807 Decachlorobiphenyl Price on request T425602 Thyroxine-13C6, 1mg Price on request PFOA Perfluoro-n-octanoic acid, 1.2ml x 50ug/ml, methanol Price on request