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Extech CL200: ExStik® Chlorine Meter

Direct reading of Total Chlorine down to 0.01ppm

CL200 is an ExStik® Chlorine Meter. This revolutionary technique measures Direct Total Residual Chlorine from 0.01ppm to 10ppm. It makes non-subjective measurements unaffected by interferences associated with traditional colorimeters and spectrophotometers like sample color, turbidity, light, and pollutants. This product comes with an electrode, five packs of 10 reagent tablets (50 tests), a protective sensor cap, a sample cup with cap, four CR2032 batteries, and a 48” neck strap.



  • 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 method for wastewater compliance monitoring of Total Chlorine.


Specifications Range
Chlorine (ppm) 0.01 to 10.00ppm
Temperature 23° to 194°F (-5 to 90°C)
Max Resolution 0.01ppm; 0.1°F/°C;
Basic Accuracy ±10% of reading ±0.01ppm; ±1.8°F/±1°C
Memory 15 readings
Dimensions/ Weight 1.4×6.8×1.6″ (35.6×172.7×40.6mm)/ 3.85oz (110g)


  • CL203 – ExTab™ Reagent tablets (10pk – 100 tests)
  • CL204 – ExTab™ Chlorine Reagent tablets (100pk – 1000 tests)
  • CL207 – Chlorine Standard
  • CL205 – ExStik® Replacement Chlorine Electrode Module
  • PH105 – ExStik® Replacement pH Electrode Module
  • RE305 – ExStik® Replacement ORP Electrode Module
  • EX006 – Weighted Base and Solution Cups Kit
  • EX007 – Spare Sample Solution Cups (24pk)
  • PH4-P – 4pH Buffer Solution (2 Bottles)
  • PH7-P – 7pH Buffer Solution (2 Bottles)
  • PH10-P – 10pH Buffer Solution (2 Bottles)
  • PH103 – Tripak Buffer Pouches (4, 7 and 10pH plus rinse solution)
  • 650470 – Tripak Dry Powder Buffer Capsules (4, 7 and 10pH)


CL200_English Datasheet

CL200_English User’s Manual

CL200_CE Declaration of Conformity