Mass-Labelled PCB Solution, 1.2ml x 100ng/ml, nonane Back Catalog number: PCB-IS-A100 Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 9425.8-100-ME Valproic acid-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 87745-17-3 Price on request 677935 D12-Benzo[a]pyrene, 10.0 µg/ml, Acetonitrile, 1m Price on request 12114.4-100-ME Metformin-d6 hydrochloride (dimethyl-d6),100 µg/mL,MeOH,1mL, Price on request