2,3,8-Trichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Dibromofluoromethane

4,4'-DDT, 100 µg/ml, Methanol, 1ml

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