Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml Back Catalog number: 57019 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 677943 n-Heptyltin trichloride, 1000 µg/ml, Methanol, 5 Price on request 70461 2-Nitropropane Price on request 0024.16-200-T Benzo[b]naphtho[1,2-d]furan, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 205-39-0 Price on request