Perchlorate Level 1 Back Catalog number: 59339 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3742.12-100-IO 2,3,4,4',5,6-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 41411-63-6 Price on request 66189 2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Price on request TBDE-71 Great Lakes Chemical DE-71™ Pentabromodiphenyl Oxide, 1.2ml x 100ug/ml, toluene Price on request