Rapitest Soil pH Meter with probe 

Ideal for testing soil pH levels of your indoor potted plants or outdoor garden areas. The Rapitest Soil pH Meter measures pH levels from 3.9 to 9.0. 

The Rapitest Soil pH Meter gives almost instant test results on an easy to read dial.

Comes with a probe cleaning pad and a plant pH reference chart that lists over 350 plants.

You'll also get a complete guide to adjusting the soil to reach the optimum acidic or alkaline levels for your plants.

No batteries required.