EPA Method 8141 Standard Back Catalog number: 92834 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11470.8-1G Phthalic-3,4,5,6-d4 acid,neat,neat,1g, Price on request 676691 Heptachlor, 100 µg/ml, Ethyl acetate, 1ml Price on request 674001 3,4-Dichloroaniline, 1000mg Price on request