EPA Method 507 Pesticide Standard Back Catalog number: 91974 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90595 Aroclor 1248 Price on request 2533.11-25MG (2RS)-2-(4-Ethylphenyl)propanoic acid, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 3585-52-2 Price on request 79423 2-Chloroethyl vinyl ether Price on request