Potassium (K) Back Catalog number: 57219 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended HPCB-4007N 4-Hydroxy-2',3',4',5'-tetrachlorobiphenyl, 10mg Price on request 678969 oxy-Chlordane, 100 µg/ml, Acetonitrile, 1ml Price on request 50184 Ammonium (NH4+) Price on request