Pentachlorophenol, 10µg/mL in MeOH, 10ml

2,2',3,3',5,5',6-Heptachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

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

Chlorfenvinphos, 100 µg/ml, Methanol, 1ml