Multi-Element Internal Standard

2,3,5-Trichloro-6-hydroxybenzoic acid, 100mg

2,2',3,4',5,6'-Hexachlorobiphenyl,100 µg/mL,isooctane,1mL,

1,2,3,4,7,8-Hexachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene