Hanna Instruments HI73311 Spare EC/TDS Electrode (for HI98311 & HI98312) Plant Supplements Ideal for storage after use

Ideal for storage after use and monthly hydration maintenance

1x uvOnair 3000 Ozone Generator

The stainless steel components and powder coated frame clean-up easily and quickly

helping commercial growers manage humidity while operating efficiently

The Alfred Heat Mat 20" x 20

Hanna Instruments HI73311 Spare EC/TDS Electrode (for HI98311 & HI98312) Plant Supplements Ideal for storage after useHanna Instruments HI73311 Spare EC TDS Electrode (for HI98311 & HI98312) Replacement Conductivity Sensor Amperometric Graphite Fast Swap for Accurate EC TDS Readings The Hanna Instruments HI73311 is the official replacement conductivity (EC) and TDS electrode for the HI98311 and HI98312 testers. If your EC TDS readings have become unstable, slow to respond, or hard to calibrate, replacing the sensor is a simple way to restore reliable