Calibration Standards Set Back Catalog number: 53016 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66156 PCB No. 156, 100µg/ml in Isooctane, 1ml Price on request 71223 4-Bromo-2,6-dichlorophenol Price on request 63054 2,2’,6,6’-Tetrachlorobiphenyl (54) Price on request