PCB Congeners Standard Back Catalog number: 94239 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2339.10-K-HX 1,3-Dimethyl-5-ethylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 934-74-7 Price on request 676689 Prohexadione Calcium, 100mg Price on request 72231 Penicillin V Price on request