Internal standard 3, 2000g/ml in MeOH, 1ml

2,2',4,5'-Tetrabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

2,2,3,3,4,5,5-Heptachlorobiphenyl,172

Tris(2-butoxyethyl) phosphate,1000 µg/mL,isooctane,1mL