This 2-in-1 chlorine and PH meter is made of high-quality plastic shell. It is sturdy and durable. This is a convenient tool for testing the pH and chlorine content of water in swimming pools and spas. This swimming pool pH tester is easy to operate. It is a key tool for fast and accurate ph value and chlorine reading, which allows you to quickly test whether the chlorine and ph value are within the required range. This digital water quality tester has a large screen that can display the test results of pH value and chlorine level for easy and accurate reading. This water quality monitor is light and portable. Recommended chlorine content in swimming pools and spas: PH levels in swimming pools and spas are 1.2 to 1.7 ppm and 7.2 to 7.8 ph. It is very suitable for daily monitoring of pH and chlorine content in swimming pools, spas and various water sources,