Hanna Conductivity Soil Test Pen (HI 98331) (eco-5523A) Hanna Soil Test Pen - The HI 98331 takes quick and accurate readings directly in soil. It is the only meter available that will take conductivity readings directly from the soil without creating a soil solution for testing. The meter also measures temperature and the conductivity readings are compensated for temperature with the sensor incorporated into the probe. Manufacturer's Product Information MSRP $ 125
