EPA Method 601 Internal Standard Back Catalog number: 19094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678217 Isoproturon-desmethyl, 100mg Price on request C10090000 Aldrin, 250mg Price on request 676335 Dimethachlor Metabolite CGA 369873, 10mg Price on request