PCB No. 21, 100µg/ml in Isooctane, 1ml Back Catalog number: 66021 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3932.4-1ML 1,4-Dichlorobutane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 110-56-5 Price on request 682134 4,4'-Dichlorobenzophenone, 100 µg/ml, Ethyl aceta Price on request 95079 Ethanol 3000 Price on request