Acids Calibration Level 3 Back Catalog number: 94840 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92389 2,3,4,6-Tetrachlorophenol Price on request 8240.13-100-T 4,4'-Difluorodiphenylmethane, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 457-68-1 Price on request PCB-IS-B100 Mass-Labelled PCB Solution/Mixture , 1.2ml, nonane Price on request