1,2-Dichloronaphthalene,50 µg/mL,isooctane,1mL,

Atrazine

Oxadiazon-hydroxy ,10 µg/mL,toluene,1mL,

17?(H),21ß(H)-(22R)-Homohopane, 500µg/mL in Isooctane, 1mL