EPA Method 528 Internal Standard Back Catalog number: 93188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680895 D20-Ethion, 100 µg/ml, Acetone, 1ml Price on request 0239.20-10MG Benzo[a]pyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 50-32-8 Price on request M24P-DDT 1,1,1-Trichloro-2-[2-chloro(13C6)phenyl]-2-[4-chloro(13C6)phenyl]ethane, 1.2mL x 100ug/mL, nonane Price on request