epsilon-HCH, 10μg/ml in Acetonitrile, 1ml

4-Nitrophenol, 10.0 µg/ml, Acetonitrile, 10ml

zeta-Cypermethrin, 100 µg/ml, Acetone, 1ml

1,2,3,4-Tetrabromo-5-chloro-6-methylbenzene,1000 µg/mL,MeOH,1mL,