Chlorine test set point: Before first use, please set the tester for swimming pool water or hot spring water to be tested in the following order: 1. Use chlorine test tools. traditional liquid for testing swimming pool water or hot spring water; 2. Record chlorine readings are available for use (1.5PPM) 3. No need to adjust pH. Find the tester's set point: A. Put a 1.5V AA battery (positive side up) into the battery slot in the handle. B. Hold the tester in one hand and the test rod in the other. C. Insert the cleaned metal rod into the water until the black position. D. Gently stir the water with a metal rod. E. When the metal rod is held in the water, turn the button 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 (such as 1.5). F. Take the test rod out of 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 "set point". Test pH value: The recommended chlorine content of swimming pool water or water of hot spring is 7.2-7.8A) Let the test stick stay in the water and turn the knob in the direction of PH to beep (battery should be removed when reading PH) . B) Wait for the pointer to stop swinging and take a pH reading. C) Gently dry the test stick, insert it into the slot next to the tester and store it. Test the chlorine content: The recommended chlorine content of swimming pool or hot spring water is 1.2-1.7ppm A) Set pointer to "set point" position. B) Holding the tester in one hand and the test rod in the other hand, insert the metal rod into the water to the black position. Wait for the pointer to stop swinging and take a reading. C) Leave the test stick in the water and continue to perform the pH test according to the instructions. specification 1. Essential tools for swimming pools, saunas and hot springs 2. The ideal tool for simply measuring the PH and C12 values of water 3. No chemical composition, no need to guess for measurement 4. Chlorine content level within the safe measurement range: 1.2-1.7ppm 5. pH level within the safe measuring range: 7.2-7.8 6. Battery: Use 1 AA battery Storage Method: In order to extend the life of the PC-101 Pool Tester and ensure accurate measurement, Please note: 1. When not in use, please turn the knob to the closed position (in the PH direction until it can no longer be moved). 2. Store in a cool, dry place and avoid direct sunlight. 3. Do not immerse the test stick in any liquid other than swimming pool water and hot spring water. 4. Regularly check whether the battery power is sufficient - the tester uses a 1.5V AA alkaline battery