Feature 1EASY TO OPERATE: The swimming pool PH chlorine tester is easy to operate and requires no more chemicals. 2PURPOSE: PH chlorine meter is a handy tool to test water PH and chlorine levels in swimming pools and spas. 3EASY TO READ: The large screen displays the test results of PH value and chlorine value, and the reading is convenient and accurate. 4PORTABLE: The swimming pool PH meter is lightweight, compact and easy to carry. There is a hole for easy hanging. 5PREMIUM MATERIAL: The water quality tester is made of high quality plastic casing, which is sturdy and durable.Item Type: Water Quality TesterMaterial: PlasticSize: Approx. 19 x 12cm/7.5 x 4.7inProbe Length: Approx. 15cm/5.9inBattery: 1 x 1.5V Alkaline Battery AA (Not Included)Gross Weight: Approx. 225g/7.9ozApplication: PH and Chlorine Gas Detection for Swimming Pool and SPA Pool WaterThe Recommended Chlorine Level for Swimming Pools and SPAs is 1.2 to 1.7 ppmRecommended PH for Swimming Pools and Spas is 7.2 to 7.8 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Swimming Pool Water Quality Tester (BatteryNot Included)1 x Manual1 x Gauze PaperNote1. When not in use, please turn the knob to the off position (towards the PH direction until it can no longer move).2. Store in a cool, dry place, avoid direct sunlight.3. Do not immerse the test rod in other liquids except swimming pool water and hot spring water.4. Periodically check that the battery is fully chargedthe tester uses an "AA" 1.5 V alkaline battery5. Please allow some errors due to manual measurement.Test pH: The recommended chlorine level for swimming pool or spa water is 7.2 to 7.8 A) With the test stick in the water, turn the knob in the pH direction until it beeps (the battery must be removed to read the pH). B) Wait until the pointer stops wiggling and take a pH reading. C) Gently dry the test stick, insert it into the slot close to the tester, and store it. Test for chlorine levels: 1.2 to 1.7ppm is recommended for swimming pool or spa water. 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 to the black position. Wait until the pointer stops swinging to take the reading. C) Let the test stick stay in the water and continue the pH test according to the instructions.