2,3,3',5-Tetrachlorobiphenyl

Atrazine-d5 (ethyl-d5),100 µg/mL,acetonitrile,1mL,

Endosulfan I

Levoglucosan, 1000µg/mL, Solvent-Tetrahydrofuran, Unit 1mL, # of units-1, Cas.no. 498-07-7