2,4,4',5-Tetrachlorobiphenyl (74) Back Catalog number: 66074 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-I Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 73552 alpha-Humulene Price on request 3143.18-K-IO Octadecanoic acid (Stearic), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 57-11-4 Price on request