PCB Congeners (10 ppm) Back Catalog number: 98003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676792 4-tert-Octylphenol-mono-ethoxylate, 10.0 µg/ml, A Price on request 93755 Isocratic Test Standard Price on request 10659.6-25-AN U-{13C6}-Kojic Acid Price on request