Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 52420 EPA Method 300.0 Anions Price on request 51067 ASTM D-4815 Calibration Mix #4 Price on request 52170 ILM 05.3 ICP-MS ICV Price on request