Parathion-ethyl, 100 µg/ml, Cyclohexane, 1ml

4,4’-Methoxychlor

1,3-Dimethylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 575-41-7

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 1x10mL, 5x10mL