alpha-Endosulfan 10 µg/mL in Cyclohexane, 10ml

4-Hydroxyphenylacetic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 156-38-7

Arochlor 1232, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 11141-16-5

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 10x10mL