Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 95554 Semi-Volatile Mix #1 Price on request 98740 ASTM D-2887 Column Test Standard Price on request 71425 Dithiothreitol Price on request