SAFE to chlorine based tablet pool, pH needs to be correct. If pool water is not balanced correctly then the chlorine sanitizer won't be working
pH should be neither too acidic nor basic in order to feel comfortable
CORROSION-FREE. (imbalanced pool can be corrosive to the liner, ladders and hand rail and other equipment such as the pump
Recommended Chlorine Level for pool and spa: 1.2 to 1.7ppm and 7.2 to 7.8ph for PH Level for pool and spa
Easy to carry, No chemical agent need and easy maintenance

Specification:
Material: Plastic
Weight: 298g/10.5oz
Main body size: 190 * 120mm / 7.5 * 4.7in
Handle probe length: 150mm / 5.9in
Probe Length: 48mm / 1.9in (excluding black belt)
Cable Length: 130mm / 5.1in
Power supply: 1* AA 1.5V alkaline battery (NOT included)

Package List:
1* CL2 Chlorine & PH Analysis Meter with Probe

Note:
1. You need to prepare 1.5 PPM of chlorine solution in the pool water for calibration
2. If you are unsure if the chlorine content is 1.5 PPM (or if you cannot find a calibration point), use a traditional test strip
3. After the pool has been calibrated, there is no need to recalibrate unless it is changed to use a different pool water to measure another pool.