CWA BTEX Back Catalog number: 38396 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66049 2,2',4,5'-Tetrachlorobiphenyl (49) Price on request 2785.12-100-IO 3,3'-Dichlorobenzidine, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 91-94-1 Price on request 94152 Semi-Volatile Standard Price on request