Aqueous ethanol control EtOH AQ (4.0g/L), 10 x 3.0ml

1,4,5,8-Tetrachloronaphthalene (96%), 1.2ml x 48ug/ml, nonane

Dibenzothiophene in Xylene Units: 5x1mL ampoule, 1x10mL screw cap bottle Chiron No. (Matrix) Concentration Isooctane Xylene White oil 3 cst µgS/g (ppm) Wt.% S-4055-0-IO S-4054-0-XY S

Arochlor 1232, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11141-16-5