Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 11789.12-50-NN 2,4,8-Trichlorodibenzofuran,50 µg/mL,n-nonane,1mL, Price on request 682476 Ethoxybenzamide, 100mg Price on request 71106 Isopropyl acetate Price on request