Made of high quality plastic shell, large display, durable and practical Just for measuring pool water pH No traditional chemicals just needed Ideal for home and laboratory pH testing applications such such as household drinking water, aquariums, swimming pools, tap water, hydroponics, spa, laboratory and scientific testing As a high-precision measuring device, it can indicate the test result quickly Just for measuring pool water pH No traditional chemicals just needed Ideal for home and laboratory pH testing applications such as home drinking water, aquariums, swimming pools, tap water, hydroponics, spa, laboratory and scientific testing As a high-precision measuring device, it can indicate the test result quickly and accurately A practical tool to test water pH and chlorine level for swimming pool and spa, ensure your health Product Information Technical Product dimensions (L x W x H) 18 x 3.1 x 11.6 cm; 220g Product features: This water quality tester is designed to test pH and chlorine level for swimming pool and spa. Its easy to use, no more chemicals. The large screen quickly shows the test result with high accuracy. Lightweight and compact, easy to carry. Technical data Condition: 100% New Material: plastic + metal Color: gray white Size: about 18 x 11.6 x 3.1cm/7.1 x 4.6 x 1.2 Power supply: 1 x AA 1.5V batteries (not included) Recommended chlorine content for pools and spas: 1.2~1.7ppm Recommended PH for pools and spas: 7.2~7.8pH Package weight: 220g Quantity: 1pc provided: 1 x Water Quality Tester warning: 1. Please do not immerse the probe in any liquid other than pool or spa water. 2. Please turn the switch to the position when not in use. 3. Please store the tester in a cool and dry place.