ASTM D-4815 Calibration Mixes Back Catalog number: 51069 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended APFNOBS Sodium p-perfluorous nonenoxybenzenesulfonate, 50µg/ml in MeOH, 1,2ml Price on request V124965-1MG Verapamil-d6, 1mg Price on request 0230.32-1MG Naphtho[2,3-a]coronene, neat, Solvent-neat, Unit 1mg, # of units-1, Cas.no. 190-74-9 Price on request