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Buying a conductivity meter for use in hydroponics

 

The following features are important considerations when choosing an EC meter:

- Readout in Siemens (e.g. “mS”) or CF. Avoid meters that will only yield TDS (ppm).

- Calibration facility.

- A waterproof housing is desirable. However, this feature is generally not available on more sophisticated meters.

- Temperature compensation: A built-in temperature sensor and computer algorithm adjusts readings to display what the conductivity would be if the temperature was at 25OC / 77OF.

- Auto-off feature: For prolonging battery life.

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Related topics:

"Conductivity (EC) for Hydroponics":

What is Conductivity (EC)? | Units of measure for EC | Using EC to control nutrient concentration

Calibrating EC meters | Maintaining EC electrodes | Buying a conductivity meter