1-(3,4-Dichlorophenyl)urea, 100µg/ml in AL, 5ml

2-Propanol, certified, 5ml

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)

THM’s - Purgeables Mix #2, 200µg/ml in MeOH, 1ml