EPA Method 8260B Surrogate Standard Back Catalog number: 23112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684729 AQC, 10mg Price on request 680100 Acetazolamide, 100mg Price on request 673705 Tetradifon, 10.0 µg/ml, Ethyl acetate, 10ml Price on request