Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 73422 1,2-Methylenedioxybenzene Price on request 675957 1-(3,4-Dichlorophenyl)-3-methylurea, 100 µg/ml, A Price on request 70154 Diethyl phthalate Price on request