Calibration Standard Mix 4 Back Catalog number: 52013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-I40 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 11678.12-100-IO 2,3',6-Trichlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request P838285 Propyl Paraben, 10g Price on request