Potassium (K) Back Catalog number: 50378 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70254 Prometryne, 1000µg/ml in MeOH, 1ml Price on request 83510 EPA Method 8315 Calibration Mix #2 Price on request 50738 Nitrite as NO2- Price on request