EPA Method 525 - Internal Standard Back Catalog number: 30031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3318.6-100-CY epsilon-HCH (BHC) Price on request 59908 Cations Std. Level 3 Price on request 682154 D3-Metribuzin, 100 µg/ml, Acetonitrile, 1ml Price on request