This is a fast and accurate meter that tests plant and garden growing conditions.
- Teacher's Guide Included
- Meter Senses Minute Currents in Soil
- Reference Chart for 400 Plants Included
Simply probe the soil for an instant pH reading.
It measures from 3.5 to 9.0 pH by sensing minute currents in the soil.
Ordering information: This items includes a colorful manual with pH preferences for more than 400 plants and requires no batteries.