EPA Method 8240A - Purgeable Surrogate Std Back Catalog number: 24002 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685734 Fensulfothion-oxon-sulfone, 100µg/ml in AL, 1ml Price on request 73478 2,6,?,?-Tetrachlorotoluene Price on request 2783.12-100-AN 4-Aminobiphenyl,100 µg/mL,acetonitrile,1mL, Price on request