Atrazine-desisopropyl-2-hydroxy, 100 µg/ml, Metha

Instrument Standard 5

2,2,4-Trimethyl-1,3-pentanediol diisobutyrate

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy 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)