- Aquaflex
- Features its soil moisture meters – useful given the inherent variability of soil and the non-uniformity of water application.
- Earth Systems Solutions
- Provides line of products for soil moisture monitoring and sampling.
- Kel Instruments
- Distributes soil acidity and moisture testers, salinity testers, and soil phD meters.
- Soilmoisture Equipment
- Contains product information and equipment rental related to soil moisture.
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