EPA Method 200.8 Back Catalog number: 50769 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673526 Chlorpyrifos, 100 µg/ml, Ethyl acetate, 5ml Price on request 70326 1-Acetyl-2-thiourea Price on request 3904.25-5MG Bixin, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 6983-79-5 Price on request