4-Hydroxy-2',3,5,5'-tetrachlorobiphenyl, 10mg Back Catalog number: HPCB-4009N Availability: In the manufacturer's stock Price on request - + Recommended 31070 EPA Method 502/524 Surrogate Standard #3, 2000µg/ml in MeOH, 1ml Price on request 98430 EPA 8240B Calibration Standard Price on request 3944.1-1ML Dichlorodifluoromethane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 75-71-8 Price on request