EPA Method 8260B - Purgeable Internal Std Back Catalog number: 27013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672909 beta-Cyfluthrin, 250mg Price on request 677816 Ethoprophos, 10.0 µg/ml, Acetonitrile, 10ml Price on request 50212 Total Phosphorus (P) Price on request