EPA Method 525.2 Pesticide Level 4 Back Catalog number: 92843 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96544 Secobarbital-D5 Price on request 676932 D8-Paraquat dichloride, 100 µg/ml, Deuterium oxid Price on request 675552 Chlorthiophos, 100 µg/ml, Ethyl acetate, 5ml Price on request