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How to Calibrate a Hygrometer

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How to Calibrate a Hygrometer - Let the Sealed Bag Sit

Let the sealed bag sit for a while

The sealed bag should sit at room temperature

Lianne McLeod
Place the sealed bag aside at room temperature for 8-12 hours. Pick a location free of drafts, out of direct sunlight, and away from heating or cooling vents. The temperature should be fairly constant.

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