EPA Method 551.1 Surrogate Standard Back Catalog number: 31102 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678696 EPTC, 100 µg/ml, Acetonitrile, 1ml Price on request B3TBPPP Bis(3-tert-butylphenyl) phenyl phosphate, 1.2ml x 50ug/ml, toluene Price on request X9220 n-Propylbenzene Price on request