EPA Method 552.2 - Surrogate Standard Back Catalog number: 30108 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675133 Dichlone, 250mg Price on request 71057 1,2-Difluorotetrachloroethane Price on request 1957.6-K-IO 1,4-Dichlorobenzene-d4, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 3855-82-1 Price on request