WS PAH Calibration Level 4 Back Catalog number: 92605 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2822.8-50-ME n-Perfluorooctanoic acid, ammonium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 3825-26-1 Price on request C20590400 7H-Benzo[c]fluorene, 10mg Price on request 674559 Fenamiphos, 250mg Price on request