PCB Congeners Standard Back Catalog number: 94239 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PN-21S 1,3,7-Trichloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request DF-LCS-C200 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 1278.16-2MG 2-Nitrofluoranthene, neat, Solvent-neat, Unit 2mg, # of units-1, Cas.no. 13177-29-2 Price on request