Potassium (K) Back Catalog number: 57719 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0222.22-K-T Benzo[ghi]perylene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 191-24-2 Price on request L-PFNS Sodium perfluoro-1-nonanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 1463.16-2MG 1-Nitrofluoranthene, neat, Solvent-neat, Unit 2mg, # of units-1, Cas.no. 13177-28-1 Price on request