EPA Method 8260B Internal Standard Back Catalog number: 22213 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674064 Coumaphos-oxon, 10mg Price on request 94895 Pesticide Standard Price on request 1978.17-K-IO 4-n-Nonylphenol monoethoxylate, 1000µg/ml in Isooctane, 1ml Price on request