Caffeine,100 µg/mL,MeOH,1mL,

Monolinuron, 10.0 µg/ml, Acetonitrile, 10ml

2-(2-Hydroxyethoxy)ethyl 2-hydroxypropyltetrabromo phthalate,50 µg/mL ,toluene,1mL,

PAH - Mix 6, 50µg/ml in Cyclohexane, 5ml