2,2',3,3',4',5,6-Heptachlorobiphenyl (177) Back Catalog number: 63177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-G200 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 79283 Aldrin Price on request S-4036-10K-10IO 3-Chlorothiophene in isooctane Units: 10mL screw-capped bottle Price on request