IQ 120 Mini Lab pH Meter 

The IQ 120 Mini Lab Meter is a great choice for gardeners who want to test pH, but don't need the extra features on the more complex meters. 

This surprisingly accurate, high-tech device has a silicon chip so it can measure the smallest of samples and its easy to calibrate. The IQ 120 Mini Lab even gives you an error warning when calibration isn't correct.

It has a replaceable electrode so it doesn't require solution for storage.

The IQ 120 Mini Lab Meter gives you pH results quickly on a large display that's easy to read. It features a one-point calibration that's accurate to +/- 0.1.

The IQ 120 powers off automatically and gives you 200 hours of use (holds two watch batteries). It also features a low battery warning.