PCB No. 121, 1000μg/ml in Isooctane, 1ml Back Catalog number: 63121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31028 EPA Method 525 - Phthalate Standard Price on request 676589 Urotropine, 250mg Price on request 70017R Aroclor 1232 Price on request