(+/-)-alpha-Tocopherol

Chlorpyrifos, 100µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 2921-88-2

Alachlor (ring 13C6), 100ug/ml in n-Nonane, 1,2ml

2,3',4,4',5',6-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,