Water quality tester is made of high quality plastic shell, which is non-toxic, harmless, sturdy and durable, and can be used for a long time. The design of the CL2 chlorine tester is ergonomic, lightweight and compact, easy to hold and use Portable Water Quality Tester features a large screen to display pH and chlorine content test results for easy and accurate reading. The PH pH tester can be used to test the pH and chlorine content of water in swimming pools and spas The digital water quality tester features holes, which is convenient to hang and carry, easy to operate, and does not require chemicals Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia