EPA Method 525.2 - PAH Standard Back Catalog number: 19162 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10635.12-50-T 1,2,3,7,8,9-Hexachlorodibenzofuran Price on request 0639.30-2MG Olean-12-en-11-one, neat, Solvent-neat, Unit 2mg, # of units-1, Cas.no. 10070-81-2 Price on request 70648 Difenoxuron Price on request