PCB Congeners (10 ppm) Back Catalog number: 97819 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59963 Custom Metal Mix #2 Price on request 678104 Prothiofos, 100 µg/ml, Acetonitrile, 1ml Price on request 9767.14-10-AC 4-tert-Octylphenol-13C6 Price on request