QUICK AND ACCURATE: The meter can quickly and accurately get results without the aid of color cards or messy test strips. Large displays of pH and chlorine test results for easy reading. AUTOMATIC CALIBRATION: The pH meter has an automatic temperature compensation function, which can be adjusted accordingly to get a pH reading almost immediately for water temperature and water quality. Ideal. COMPACT AND CONVENIENT: Lightweight handheld pen model and compact case can be put in your pocket or bag and can be carried everywhere. No chemical agent is needed and easy maintenance. Keep your pool/spa water safe. PREMIUM QUALITY: Made of premium plastic shell, durable and robust, widely used to measure pH/RH/Temperature/EC conductivity/CF/TDS(PPM) of solution/water for pool, spa, hot tub. WIDE APPLICATION: This digital pH meter is for testing pH and chlorine (Cl2) levels in water. Suitable for swimming pools, tap water, home brewing, laboratory testing, and maintenance. This 2-in-1 chlorine and pH meter for pools is made of premium plastic shell, durable and robust. A practical tool for testing water pH and chlorine levels for pools and spas. Easy to use, you can quickly test whether chlorine and pH are within the ideal range. Large pH and chlorine test result displays for easy and accurate reading. Specially designed for a family pool or spa. An ideal tool to keep your pool or spa within safe chlorine and pH ranges, no more chemicals or no more guessing. With this handy tester, you can quickly test whether your chlorine and pH values are within the ideal range of 7.8: 1.2 chlorine 1.7 ppm and pH value 7.2. If the test result is outside this range, you will provide useful information, adapt to the corresponding pool of chlorine and acid and alkali. It is definitely a good tool, you may need to keep the pool water safe. NOTE: The probes are recommended not to be immersed in any liquid other than pool water or thermal water. Features Recommended chlorine level for pools and spas is 1.2 to 1.7 ppm Recommended pH for pools and spas is 7.2 to 7.8 Dimensions Main unit: 190 x 120 mm Probe with handle: 150 mm long Probe (only): 48 mm long Cable (only): 130 mm long Power supply: 1 x AA alkaline batteries (1.5 V) Weight: 160 g (without battery) Set includes 1 x pH and Cl2 tester with probe Note: 1. You need to prepare 1.5 ppm chlorine solution in the pool water for calibration 2. If you are unsure whether the chlorine level is 1.5 ppm (or cannot find a calibration solution)