The electrode incorporates a temperature sensor right near the tip to enable it to measure and quickly compensate for temperature. For higher degrees of accuracy, or for stony ground where the electrode may be damaged, use the specially made HI-7051M soil preparation solution. Designed for direct soil measurement. It has a conic, rugged tip and can be directly inserted in moist or soft soil.

Note: this electrode is recommended for use with the old-style HI-99121 pH meter. Please check your model design before ordering.