Group 3 PCB’s - Low Toxicity Congeners Back Catalog number: 66214 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52041 Interference Standard 4 Price on request 66169 3,3',4,4',5,5'-Hexachlorobiphenyl (169) Price on request 71244 Methyl paraoxon, 1000µg/ml in MeOH, 1ml Price on request