2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 63174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71251 Methyl sulfide, 1000µg/ml in MeOH, 1ml Price on request 70755 Monocrotophos Price on request 683690 Atrazine-desisopropyl-2-hydroxy, 10.0 µg/ml, Meth Price on request