EPA Method 634 Analytes Back Catalog number: 40050 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70263 Simazine, 1000µg/ml in Acetone, 1ml Price on request 10340.24-100-IO n-Heptan n-nonyl phthalate Price on request 673510 Chlorpropham, 100 µg/ml, Ethyl acetate, 5ml Price on request