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 L20003000IO PCB No. 30, 10µg/ml in Isooctane, 10ml Price on request 685352 D5-threo-Chloramphenicol, 100µg/ml, Acetonitrile, 1ml Price on request L21000100IO PBB-No. 1, 10 ng/µl, 10ml Price on request