EPA Method 502/524 Surrogate Standard #2 Back Catalog number: 19267 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0951.9-K-IO 7-Methylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 14315-15-2 Price on request 70205 Isopropyl benzene Price on request 676560 Dimetridazole, 250mg Price on request