2,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml

2,2',3,4',5,5',6-Heptachloro-4-biphenylol, 1.2ml x 50ug/ml, nonane

Tartrazine, certified, 0.25g

2,4,6-Trinitrophenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 88-89-1