Internal Standard Solution, 1.2ml, toluene

Chlorfenvinphos, 100 µg/ml, Methanol, 1ml

Theobromine,100 µg/mL,MeOH,1mL,

2,2',3,4,4',6,6'-Heptabromodiphenyl ether,50 µg/mL,isooctane,1mL,