Ethoprophos, 10.0 µg/ml, Acetonitrile, 10ml

n-Pentyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219798-66-9

1-Hydroxychrysene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 63019-38-5

1,3,4,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane