à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ Total Chlorine Meter CL200 Waterproof ExStik® Chlorine Meter Direct reading of Total chlorine down to 0.01ppm and is unaffected by color or Turbidity of the sample Direct reading of Total Chlorine provides fast and easy measurements (less than 2 minutes) Low detection limit down to 0.01ppm Unaffected by sample color or turbidity Memory stores, tags and recalls up to 15 readings US EPA approved as an acceptable version of the ORION 97-70 electrode method for wastewater compliance monitoring of Total Chlorine.