Grayl Drinking Cup Filter Dirty Water Like Coffee Press

The Grayl Drinking Cup in different colors
Seattle based startup Grayl recently announced a new and innovative filtration cup which can quickly and easily filter out almost any type of bacteria, virus, chemical or metal out of the water as well as bad taste and odor using a novel technique.
The Grayl cup is made out of stainless steel, holds 15 oz. of water (450ml) which can be filtered in about 15 seconds and uses a 3 stage technology to filter almost anything you don’t want to be drinking including bacteria, protozoa, viruses, chemicals, metals, bad flavors and odors.
The 3 levels of filtering technology includes:
  • A special triple ion charged mesh for capturing germs ( E. Coli, giardia, cryptosporidium).
  • Ultra-fine activated carbon which absorbs odors and flavors, as well as industrial  & pharmaceutical chemicals and heavy metals such as lead, mercury etc.
  • Anti-microbial agent which inhibits the growth of mold, bacteria, fungus and mildew between uses. 
There are actually two types of filters you can use in the Grayl cup – the G3+ purifier and the G3+ filter – according to Grayl the difference between the two are pretty straight forward: “The Purifier does everything the Filter does, and add virus protection – Hepatitis A, SARS, etc. The purifier needs longer to extract viruses from the water, so it takes about 30 seconds to filter one Water Filtration Cup (16oz – 475ml)”.
Basically if you live or travel to  the developing World you should use the G3+ Purifier as it will give you the best protection against the full spectrum of waterborne pathogens that cause human disease (bacteria, protozoa and viruses)  which you might encounter – if you use it in places like the U.S. – you should be O.K. with using just the G3+ filter for the most part.
You can pre-order your own Grayl water purifier for just under $70 (the filters and purifiers should last you for up to 300 uses).
You can find more information on the Grayl website.
This is not the first time TFOT covers water purifying technologies. In 2007 we covered the “Life Saver ” bottle installed with a mechanism capable of purifying even the dirtiest water, eliminating foul tastes and smells from the liquid within seconds developed by Michael Pritchard, a British businessman from Ipswich.