Mass-Labelled PCB Solution , 1.2ml x 20ng/ml, nonane Back Catalog number: PCB-SS-A20 Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 0236.20-K-T Benzo[e]pyrene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 192-97-2 Price on request 55016 WS pH @ 25°C Price on request 3047.29-10MG 24-Ethyl-5ß(H)-cholestan-3ß-ol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 4736-91-8 Price on request