Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml Back Catalog number: VHG-INH41K-100 Availability: In the manufacturer's stock Price on request - + Recommended 50038 Potassium Chloride Price on request 66156 PCB No. 156, 100µg/ml in Isooctane, 1ml Price on request 681693 2,3,6-Trichlorophenol, 100 µg/ml, Methanol, 5ml Price on request