EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042R Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681477 Hexachloroethane, 250mg Price on request 0181.12-K-IO 2-Bromodibenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 22439-61-8 Price on request 70339 1-(o-Chlorophenyl)-2-thiourea Price on request