EPA Method 8250/8250A Mix #2 - Acids Back Catalog number: 82505 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N-12147-100MG Heptachlor, 100mg Price on request S-4056-750-MXX5 Thiophene/2-Methylthiophene (2:1) in isooctane/Toluene(3:1); Units: 5x1mL ampoules, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4056-0 Blank 0 S-4056-5 5 Price on request 95453 PCB Congeners & Hexachlorobenzene Mix #4 Price on request