Electronic Swimming Pool Water Quality Tester Chlorine Tester pH Value Residual Chlorine Detector Water Quality Detector PC-101 Swimming Pool Water Quality Tester (PH/CL2) Function Description: Essential tools for swimming pools, saunas, and hot springs. The ideal tool for simply measuring the PH and C12 values ​​of water has no chemical composition and no more guesswork for measurement. Chlorine content level within the safe measurement range: 1.2-1.7 ppm pH level within the safe measurement range: 7.2-7.8 ​​ Battery: Use 1 AA battery Water quality detector product description: Chlorine test setting point: Before using it for the first time, please set the tester in the following order for swimming pool water or hot spring water to be tested: 1. Use traditional liquid testing tools to test swimming pool water or hot spring water; 2. Record the chlorine reading for backup (1.5 PPM); 3. No need to adjust the pH. Find the tester's setting point: A. Insert a 1.5V AA battery (positive side up) into the battery slot on the handle. B. Hold the tester in one hand and the test stick in the other. C. Insert the cleaned metal rod into the water to the black position. D. Gently stir the water with a metal rod. E. With the metal rod in the water, turn the knob on the front of the watch in the CL direction until it can no longer be moved. Then slowly adjust it to the right until the pointer points to the position of the result measured by the traditional liquid test tool. Test the chlorine content: The recommended chlorine content for swimming pool water or hot spring water is 1.2 to 1.7 ppm. 1. Set the pointer to the "set point" position. 2. Hold the tester in one hand and the test rod in the other, and insert the metal rod into the water to the black position. Read the reading after the pointer stops swinging. 3. Leave the test stick in the water and continue to perform the pH test according to the instructions. pH Value Test: The recommended chlorine content for swimming pool water or hot spring water is 7.2 to 7.8. 1. Leave the test stick in the water and turn the knob in the pH direction to make a beep (the battery must be removed when reading the pH value). 2. Once the pointer has stopped swinging, take a pH measurement. 3. Gently dry the test stick, insert it into the slot next to the tester, and store it. 4. Remove the test rod from the water, being careful not to move the knob. The pointer will slide to the right and stop with a letter between A and E. This letter is the adjustment point. Note: Before each chlorine test, the meter must be set to the "adjustment point." Quantity delivered: 1 piece Good quality product