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 678130 2,4-Dichloroaniline, 500mg Price on request 684513 Fenbutatin oxide, 10.0 µg/ml, Methanol, 10ml Price on request 66201 2,2',3,3',4,5',6,6'-Octachlorobiphenyl (201) Price on request