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Humidity limitation symbol: a circle containing a percent sign above wavy water lines, crossed by a diagonal line with short horizontal strokes at the bottom left and top right
ISO 15223-1-5.3.8
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Humidity limitation

A circle containing a percent sign above wavy water lines, crossed by a diagonal line with short horizontal strokes at the bottom left and top right. · also called “% RH”, “Humidity limit”, “Moisture limits”, “Relative humidity range”

What the Humidity limitation symbol means

Allowed humidity range

Gives the range of humidity the medical device can safely be exposed to. The lower and upper limits, usually in percent relative humidity, are printed next to the two strokes.

Source · Official website Medical device manufacturer's digital symbols glossary · checked

Where it appears

Medical device label
  • ISO 15223-1
    —This meaning

Questions about the Humidity limitation symbol

What does the Humidity limitation symbol mean?
Gives the range of humidity the medical device can safely be exposed to. The lower and upper limits, usually in percent relative humidity, are printed next to the two strokes.
What does the Humidity limitation symbol look like?
A circle containing a percent sign above wavy water lines, crossed by a diagonal line with short horizontal strokes at the bottom left and top right. It is also called “% RH”, “Humidity limit”, “Moisture limits” and “Relative humidity range”.
Which standard defines the Humidity limitation symbol?
It is listed as ISO 15223-1-5.3.8.

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