EPA Method 8032 Internal Standard Back Catalog number: 80303 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9217.13-100MG 4-Chlorobenzophenone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 134-85-0 Price on request 79310 Propachlor Price on request 1577.23-100MG Pholcodine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 509-67-1 Price on request