EPA Method 502.2 Surrogate Standard Back Catalog number: 91704 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1324.18-10UG Chrysene-trans-1,2-dihydrodiol, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 64920-31-6 Price on request 55076 Total Inorganic Water Pollution (WP) (Kit) Price on request 678002 Prothiofos, 100 µg/ml, Toluene, 1ml Price on request