TOC Calibration Standard Back Catalog number: 50240 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9534.12-50-IO 2,3,3',4,4',5,5'-Heptabromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 88700-06-5 Price on request 681882 2-Phenylhydroquinone, 100mg Price on request 98626 PCB Mix 25 ppb Price on request