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Despite all the hype surrounding Larq and their appearance on a TV show, the harsh reality is that there is nothing new about their product. The UVC water sterilising bottles have been around since at least 2009 using other more powerful sources of UVC. The use of the LED is just a simpler and cheaper approach that requires a bit longer to do the job. Here's a YouTube video of a Camelbak quartz tube version from 2009! • Outdoor Retailer: CamelBak All Clear UV Wa... It's also worth mentioning that the bottle will be very sterile inside due to the UVC exposure, but areas it doesn't reach, like the drinking area will still need cleaned. So it's not really "self cleaning". The principle of operation is that a source of UVC light can be used to deactivate viruses, bacteria and really every living thing in the water. That means that if you're camping or hiking, you can safely use most sources of natural water without worrying about health risks. UVC is not a natural light wavelength at ground level in nature, as it is filtered out by the ozone layer which works by oscillating between oxygen and ozone - absorbing UVC energy in the process. At ground level we recreate it on demand with UVC tubes and LEDs to sterilise any surface it shines on. It's dangerous for direct exposure, and can cause skin and eye irritation, so most devices rely on safety interlocks or common sense in operation. UVC light does not pass through standard glass and most plastics, so the clear bottle units are safe to view in use. Clean water does allow penetration of the UVC, so it can reach all the organic components. It is widely used to sterilise well and pool water. This unit came with instructions in Chinese that indicated that tapping the display in the middle three times would activate the sterilising feature and tapping it twice would activate the "drinking reminder timer". In reality, the touch sensors are above and below the display, so I'd suggest touching those areas or just use your whole palm to "clap" it. The water temperature probe apparently disables the unit if the water is above 60C which is a "hot drink" temperature. I would guess it's to avoid overheating the LED. I can only assume it's in case people put boiling hot water in the bottle? The circuitry is absolutely begging to be reduced to an 8 pin chip with integrated touch sensor. Its eight pins could be:- Supply positive Supply negative Touch input Status LED used to show charging and operation. Charging indication from LTH7 charge control chip. UVC driver enable. Optional UVC LED heat sensor (or emulate in software). Optional light sensor to detect a removed lid. (The light sensor can't detect UVC.) There are other options for UVC sterilisation of water. Like the Steripen, which is a small unit you submerge in the water. All these devices benefit from agitation of the water for best exposure. If you enjoy my videos, you can help support the channel with a dollar or two for coffee, cookies and gadgets, and keep it independent from the quirks of the YouTube algorithm by supporting me on Patreon. This also lets me link to my content on other platforms if YouTube uses the ban-hammer (again!) I release content for critique and feedback on Patreon as soon as it has been made. / bigclive Alternatively, for a single contribution you can use PayPal:- https://www.paypal.com/paypalme/bigclive #ElectronicsCreators