Device for controlling relative humidity within a substantially sealed container
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United States of America Patent
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Aug 6, 1991
Issued Date -
N/A
app pub date -
Feb 20, 1990
filing date -
Oct 7, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An insert for inclusion in a substantially sealed container to control the relative humidity within the container is provided. The insert is a packet at least part of the surface of which is a membrane capable of passing water vapor and which contains a buffering substance which is a saturated salt solution selected according to the desired relative humidity, and modified by a nonelectrolyte, if necessary, to adjust the relative humidity.
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