Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 90782 tert-Butanol Price on request 70240 Pebulate Price on request 681472 D12-Benzo[a]pyrene, 10.0 µg/ml, Acetonitrile, 10 Price on request