High precision water quality tester: With a highly sensitive electrode sensor, you can obtain a complete measurement range of 0-14 pH and a resolution of 0.01 pH. This includes a detailed manual that guides you on how to obtain the best accurate and stable readings. Widely used: Widely used in households or businesses. In addition to testing drinking water, our water pH tester is also suitable for hydroponics, swimming pools, spas, beer, wine, laboratories, home brewing, and aquaculture. Easy to carry: Small and lightweight, making our digital PH easy to carry. Compact and practical. Stable and reliable readings: An additional dedicated chip has been added to maintain consistency in readings, making PH readings more stable. (Reduce interference from surrounding electrical equipment) Widely used: Widely used in households or businesses. In addition to testing drinking water, our water pH tester is also suitable for hydroponics, swimming pools, spas, beer, wine, laboratories, home brewing, and aquaculture. Colour:As Shown Material:plastic Package Contents: 1 * ph meter 3 * calibration powder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.