EPA Method 525.2 Pesticide Level 1 Back Catalog number: 92846 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MHXCB Hexachloro(13C6)benzene, 1.2mL x 100ug/mL, nonane Price on request 83558 o-Tolualdehyde-DNPH, 100µg/ml in Acetonitrile, 1ml Price on request 53120 EPA Method 353.2 Nitrate + Nitrite Price on request