EPA Method 8260B - Purgeable Internal Std Back Catalog number: 22013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31057 EPA Method 552.1 - Surrogate Standard Price on request 674463 Chloroxynil, 25mg Price on request 673657 Pendimethalin, 10.0 µg/ml, Ethyl acetate, 10ml Price on request