The Thirsty Bag

Type Part # Supplier Url
ifixit.com IF145-163 iFixit Buy Now!

The Thirsty Bag is a simple, inexpensive, and effective response to electronic water damage. The Molecular Sieve quickly absorbs the water from any device you leave inside. The special beads are engineered to grab water molecules out of the air, and never release them. It can reduce the atmospheric humidity to 1% RH and remove liquid overnight.

Why it Works ¶ 

Modern, low voltage devices typically do not "burn out" immediately upon water contact. Instead, tiny microscopic beads of water in chip housings and on circuit boards are re-routing the power erratically to places it doesn't belong. This can cause a cell phone to malfunction, or not work at all.

This means, luckily for us, that if you can remove all the water from the phone it is likely to work again. Unfortunately, this is not as easy as it sounds. Water will cling to the smallest spaces where towels and sponges can't reach. We can't heat the phone to get the water out, or we may cook the sensitive flash memory, or melt delicate components. So we must turn to science to get our phone dry.

Liquids, in an atmosphere, will reach what is called an equilibrium vapor pressure. Which means that liquids will evaporate into the atmosphere around them until the atmosphere reaches a saturation limit based on the temperature. We recognize this as air drying. It is why when you spill water on your linoleum kitchen floor and leave it till morning, it will be gone. Water will continue to evaporate into the atmosphere until the atmosphere reaches this equilibrium vapor pressure*. This means if we keep drying out the atmosphere, water will keep evaporating. This allows the Thirsty Bag to maintain an extremely low vapor pressure in the bag, and suck the water out from many of the hard to reach places in the phone.

*About 2.5% RH at room temperature

Reviews ¶ 

"... A good deal that will offer peace of mind for those who have any worries at all about spills"

- iSource

"iFixit's new "Thirsty Bag" can very effectively clear liquids from electronics."

- Cnet

"The iFixit Thirsty Bag can be a life-saver when it comes to salvaging water-damaged iPhones and iPads… if you happen to have one around when an accident happens."

- iMore Reviews

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