EPA Method 8141 Standard Back Catalog number: 92353 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679836 Tris-(2-butoxyethyl)phosphate, 100 µg/ml, Methano Price on request 677962 Fenitrothion, 100 µg/ml, Toluene, 1ml Price on request 71266 Triforine Price on request