beta-HCH, 100 µg/ml, Acetonitrile, 5ml

3,4,5-Trichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 57057-83-7

2-Ethoxyethyl acetate,1000 µg/mL,MeOH,1mL

15N3-Atrazine-desethyl, 100 µg/ml, Acetonitrile,