PCB Congeners Standard Back Catalog number: 94239 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91952 4-Bromo-3,5-dimethylphenyl-N-methylcarbamate Price on request 10212.8-50MG Methyl 4-hydroxybenzoate-2,3,5,6-d4,neat,neat,50mg, Price on request 673031 Bacitracin, 250mg Price on request