Come and see our amazing products. This pH meter is affordable and useful for those who need a PH tester for household and laboratory use. Measuring range: 0.00-14.00 pH, Resolution: 0.01 pH, Accuracy: 0.01 pH, Batteries: 2X 1.5V LR44 (included). It's not only ideal for household or laboratory use. Also suitable for testing pH balance of drinking water, pool, aquarium, food Project, RO system, Spa, or hydroponics. Easy to Use You just remove the protective cap and immerse the PH meter electrode in the solution and turn on the PH by "ON / OFF" switch to be measured. Test figures such as stability, reading figures, the test is completed. Pls confirm with us about the packing info, stock status and exact production time before placing your orders.