Mass-Labelled PCB Congener Solution/Mixture, 1.2ml, nonane Back Catalog number: MBP-D7 Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended DPE-77 3,3',4,4'-Tetrachlorodiphenyl ether, 1.2ml x 50ug/ml, toluene Price on request 97530 8260 Screening Standard Price on request 1383.13-200-T 2-Methylcarbazole, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3652-91-3 Price on request