Arochlor 1260 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11096-82-5

WS pH @ 25°C

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)

N-Nitrosodipropylamine-d14, 5mg