<p>Suitable for water quality testing, such as drinking water testing, hydroponic planting, laboratories, aquaculture, sewage treatment, etc.</p> <p>This instrument is widely used in the following occasions: Measurement of total residual chlorine in solution, including free chlorine (Cl2) Hypochlorite (OCl-) and nitrogen compounds of chlorine (such as chloramine T) Measurement of residual chlorine in drinking water, cooling tower water, industrial and domestic wastewater. Process applications using chlorine as a and disinfectant, such as industrial water quality control, hot , etc.</p> <p>Maintenance: After the test is completed, dry the water and keep the motor clean If it is not used for a long time, please remove the battery and cover the electrode protective cover</p> <p>High-definition LCD display Large screen display, clear values and easy to read,</p> <p>High-sensitivity probe High-sensitivity electrode probe, measuring water quality High precision, automatic temperature compensation, reducing errors</p> <p>Battery model: lr44 (3pcs)</p> <p>Colour:As Shown</p> <p>Material:Plastic</p> <p>Package Contents:</p> <p>1x water quality test pen</p> <p>1x ph powder pack</p> <p>1x ORP powder pack</p> <p>1x English manual</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>