(±)-Fipronil,100 µg/mL,acetonitrile,1mL,

17 alpha(H),21ß(H)-30-Norhopane, 50µg/mL in Isooctane, 1ml

3-Methylcholanthrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 56-49-5

13C3-Caffeine, 100 µg/ml, Methanol, 1ml