Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 99882 Fermentation Standard, in Water, 1ml Price on request 679460 2,4'-DDT, 100 µg/ml, Methanol, 1ml Price on request 682074 2,6-Dimethylaniline, 100 µg/ml, Methanol, 5ml Price on request