EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96126 Haloacetic Acids Mix w/Surrogate Price on request 673573 Ethoxyquin, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 677349 N-2,4-Dimethylphenyl-N'-methylformamidine HCl, 100 Price on request