EPA Method 528 Internal Standard Back Catalog number: 93188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 21061 CLP Pesticide Lab Control Standard Price on request 683377 Fenbendazole, 100 µg/ml, Acetonitrile, 5ml Price on request F-7132.6-1G 2-Methoxy-1-propyl acetate, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 70657-70-4 Price on request