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How Often Do I Need To Calibrate My pH/TDS Meters?


pH Meter

Always remember to keep the pH probe moist when not in use. It is best to use pH Electrode Storage Solution; if you have run out of storage solution you can use pH 4 solution as an alternative. For the Hanna HI98129 black combo meter, place storage solution in the well of the cap that the pH electrode (not the TDS electrode) rests in. It is not advisable to store the EC/TDS/CF/PPM probe in any storage solution.

TDS Meter

The best way to store your TDS meter is to keep it clean and dry. TDS meters do not require any storage solutions. DO NOT store the TDS meter in distilled water.For long term storage, make sure that the batteries are removed from the meter as leaking batteries will corrode the circuit board rendering the meter useless. None of our meters’ warranty covers leaking battery damage. For long term storage of the pH meter it is best if the probe is stored in sufficient storage solution; if the solution evaporates then the pH probe will dry out.

How often do I need to calibrate my pH/TDS meters?

All pH and TDS meters need to be continuously calibrated; as time passes by and the more you use your pH meter, it will continually lose calibration. As the meter’s batteries get older it will also lose its calibration. Keeping the meter calibrated will help keep your plants in good health and at optimal growth. All pH and TDS meters must be recalibrated every time you change the batteries. It is good practice to calibrate your meters once a week, especially if the meters are being used daily.

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