Before use, please adjust the tester for swimming pool water or hot spring water to be tested in the following order: 1. Test pool water or hot spring water with traditional liquid test tools 2. Record chlorine reading for backup (1.5 PPM) 3. There is no need to adjust the pH. Find the tester set point: A. Place a 1.5V AA battery (positive side up) in the battery compartment of 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 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 cannot move. Then slowly turn it to the right until the pointer points to the traditional The position of the result measured by the liquid test tool (eg 1.5). F. Take the test rod out of the water, being careful not to move the button. The pointer will slide to the right and stop on a letter between A and E. This letter is the adjustment point. Note: The meter must be adjusted to the "adjustment point" before each chlorine test. Test pH: Recommended chlorine level for pool or spa water is 7.2-7.8 A) Leave the test stick in the water, turn the knob clockwise pH value until it beeps (the battery should be removed when reading the pH value). B) Wait until the needle stops moving and take a measurement. C) Gently dry the test rod, insert it into the slot next to the tester and store it. The company has always been "high quality, high efficiency, new technology, new management" for this purpose. "Innovative development, quality first, customer first" is the company's philosophy, providing customers with creative and innovative products. We emphasize team innovation, and every step of the development process is the result of teamwork, creativity, and the use of the computer. To test chlorine content: Recommended chlorine level for pool or spa water is 1.2 to 1.7 ppm A) Move the pointer to the "adjustment point" position. B) Holding the tester in one hand and the test rod in the other, insert the metal rod into the water until at the black position. Wait for the pointer to stop moving and take a measurement. C) Leave the test stick in the water and continue to perform the pH test as instructed. specification 1. An indispensable tool for swimming pools, saunas and spas 2. Ideal tool for simple pH and C12 measurement of water 3. Chemical free, eliminate the guesswork of measurement 4. Chlorine level within the safe measurement range: 1.2 to 1.7ppm 5. PH level within the safe measurement range: 7.2-7.8 6. Battery: use 1 AA battery (battery not included) Storage method: In order to prolong the life of the PC-101 pool tester and ensure measurement, Please note: 1. When not in use, please turn the knob to the off position (adjust in the PH direction until it can no longer be moved). 2. Store in a cool, dry place away from direct sunlight. 3. Do not immerse the test rod in liquids other than swimming pool water and hot spring water. 4. Periodically check that the batteries are adequate - the tester uses one "AA" 1.5V alkaline battery Note: The data is all manual measurement, please allow 1 - 3cm error, due to of the light and display difference, there will be a certain color difference, depending on the physical object received Delivery Quantity: (according to the main image)