J-DEAL® High Accuracy Pocket Size Handheld pH Meter Pen Tester +TDS Tester LCD Digital TDS Meter Tester Water Quality Ppm Purity Filter(2in1)

Ideal for many household or laboratory applications
With a standard measuring range of 0-14 pH, the pH meter 2011 is great for a wide range of tasks. An affordable way to test your swimming pool, aquarium, tap water, or appliance water source, you can finally know whether the water you are drinking or using is acceptable for the application. It is also an excellent choice for basic measurements in a laboratory setting.

Specifications
Measuring range: 0-14 pH
Resolution: 0.01 pH
Accuracy: 0.05 pH
Batteries: 4x 1.5V LR44 button cell (AG13)
Automatic temperature compensation: 0-50°C (32-122°F)
Dimensions: 5.94x1.30x0.79in /151x33x20mm
Weight: 1.87oz /53g
　

Note:
The most important part of a pH meter is the electrode,please try to use it more carefully.