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Kelway Soil Acidity and Moisture Probe simplifies fertilization and liming decisions
This simple-to-operate Kelway Soil Acidity and Moisture Probe gives reliable readings from 3.5 to 7.0 pH and water moisture from 0–100%. Probe operates through natural electric charge generated from soil through the metal side plates on the probe (no batteries to replace). Simply insert probe into soil, wait 3 min. and take readings. Accurate to ±.2 on pH and ±10% on moisture. Includes instructions and carry case. Requires conditioning film (item number 221176) to clean side plates.View all Watering Equipment and Irrigation Supplies
2016 Master Catalog: Page 464