Calibration Standards Set Back Catalog number: 53016 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2746.12-50-IO 3'-Fluoro-2,3,4,4',5,6-hexachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 10649.11-250MG (R,R)-Chloramphenicol,neat,neat,250mg, Price on request PCB-IS-B100 Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane Price on request