The ÖKO filtering water bottle has been around for more than a year but a video of its filtration abilities has it making headlines again.

The water bottle, which the website states uses “NASA derived filtration technology,” is BPA free and in the latest video is shown taking a dark, opaque cola and turning it into a clear liquid.

ÖKO has three levels of filtration. The first uses carbon to reduce chlorine, taste and odor. The second uses a 2 micro pore size that has a positive charge allow for electro-absorption, which traps anything that is smaller than the pore size of the filter. Not only is the pore size small but the manufacturer claims that the material is 0.8mm thick holding more than 400 of such pores, which creates a “tortuous path” to prevent impurities from getting through.

“Charge fields, activated upon water contact extend 1micron each to virtually close the pore to any intruding agents. Using built-in silver ions, the material then kills bacteria upon contact,” the website states.

Taking it to a third level, the highest amount of filtration is customized for known impurities in water of a certain area. For this reason, it is not for traditional retail sale.

RocketNews posted a video showing how the water bottle can filter out cola a few days ago and it has since gone viral, being reposted several times on YouTube.

Here are a couple screenshots showing the dramatic difference:

Video of OKO Water Bottle Filtering Cola Goes Viral

(Image: YouTube screenshot)

Video of OKO Water Bottle Filtering Cola Goes Viral

(Image: YouTube screenshot)

Video of OKO Water Bottle Filtering Cola Goes Viral

(Image: YouTube screenshot)

Video of OKO Water Bottle Filtering Cola Goes Viral

The final result allowed some color to go through, but it is by far clearer than the original opaque cola color. (Image: YouTube screenshot)

But it is even better to watch it in action. Check out the second-level filter, which ÖKO says comes standard in its water bottles, as it removes much of the cola color:

And Rocket News wasn’t the first to conduct the experiment. The company itself posted this video last year:

The water bottles retail for between $22.95 to $24.97, not including replacement filters.

ÖKO warns that its bottles not be used with microbiologically treated water or with water from unknown sources. An example for use of the second filtration level would be in a country where locals are drinking water from pipes but travelers were advised to use caution.

“ÖKO L2 filters are highly recommended to improve water conditions,” the website stated.

ÖKO is by no means the only filtration water bottle on the market. It is getting attention now due to the dramatic cola-filtration video.

TheBlaze’s Marketplace, which features some emergency preparedness products, has several different types of water filtration bottles and systems as well.

(H/T: BoingBoing)