AchooAllergy.com Blog
Chalk as DIY Dehumidifier
Posted by Shifrah on Monday, August 01, 2011
We love portable dehumidifiers for small, damp spaces like under sinks, in poorly ventilated bathrooms, and in closets. But did you know there's a very inexpensive and easy yet effective way to absorb low levels of moisture in your closet and other similar spaces? Using chalk as a makeshift "dehumidifier" of sorts can actually make the difference between moisture-damaged clothes and a nice, dry closet.

Martha Stewart, famous guru of home care, recommends such a chalk dehumidifier, and suggests tying a bundle of chalk with an attractive ribbon and hanging it in the closet from a hook.

Interestingly, the Riverwalker's Stealth Survivor blog offers a similar dehumidifying tip, although this time in reference to ammo storage. The Riverwalker describes how to pound chalk into a powder and then place it in an old stocking. Tie the stocking in a knot and place it in a plastic container. Punch holes in the container and place with your ammo. When the chalk clumps or gets moist, place the chalk-filled stocking outside in sunlight to let it dry out and it's ready to re-use.

Indeed, chalk is a known dessicant, which is defined by Wikipedia as "a hygroscopic substance that induces or sustains a state of dryness (desiccation) in its local vicinity in a moderately well-sealed container." The Wikipedia article further describes that "because of their common use in preservation, it is usually desirable for a desiccant to be substantially chemically stable or chemically inert, and a number of useful desiccants with this property have been identified and are in common use, such as silica gel, chalk and clay-based desiccants."

To read more about dehumidification, see the articles below:
Dehumidifier Water Removal Options
Why Buy a Dehumidifier from AchooAllergy.com
How Does a Dehumidifier Work

Image courtesy of Air and Water, Inc.


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