2,2',3,3',6,6'-Hexachlorobiphenyl (136)

ISO 17495 Internal Standard Stock Solution 2 Internal standards, each 10µg/mL in acetone; unit: 1x5mL 2061.6 2,4-Dibromophenol [615-58-7] 2060.6 2,4,6-Tribromophenol [118-79-6] The following compounds are suggested as alternative I

Atrazine-desisopropyl, 100 ng/µl, 1ml

N,N'-(1,2-Propylene)thiourea-d6, 1mg