Homedics UV Clean Portable Sanitizer – Rechargeable UV Light Sanitizer and Sterilizer Box - Kills 99.9% of Airborne Contaminates, Fits Masks, Makeup Brushes, Glasses, Cell Phones, Keys, Black

An absolutely FANTASTIC and INCREDIBLY cheap source ($5!!) of clean (low visible light output contamination) UVC light for a variety of purposes beyond sterilization of surfaces, most interestingly for the excitation of fluorescent minerals (see the three attached images - first image with manganocalcite, terlingua calcite, and willemite under normal visible light, then in fluorescing in darkness under the UVC from the Homedics sterilizer, then only the willemite and terlingua calcite phosphorescence in total darkness immediately after the UVC is switched off).Most shortwave UV lights for this purpose cost 10-20 times as much as this device (they must have made thousands of these things in anticipation of high demand during COVID, but now that practically no one cares about that anymore they're clearly trying to dump them here at any cost - so if you're an amateur scientist, their loss is your gain!). Of course, the device has to be modified to defeat the safety interlock and allow it to be turned on while open - this is easy with any magnet (ALWAYS WEAR POLYCARBONATE GOGGLE UV EYE PROTECTION WHILE USING THE MODIFIED DEVICE!). It has two LED emitters which produce around 50 milliwatts of UVC light total at 280 nanometers (10 nanometers FWHM bandwidth of the peak) right on the edge of the UVB range, and VERY little visible light emission. Don't expect it to be a bright source of light like a flashlight, it's very evenly diffuse, NOT very bright, and will only work to induce visible fluorescence of minerals in darkness, but it does work!Incidentally, the 280nm peak of UV emission (I personally measured it on a professional laboratory spectrometer) is WELL within the area of the germicidal effectiveness curve, even though it is some 25nm away from the typical mercury vapor lamp emission line at 255nm, and is definitely sterilizing surfaces exposed to its radiation very quickly. The device is well constructed, runs for 30 seconds after every power button press, can be reactivated again immediately, and recharges easily.HIGHLY recommended for the UV enthusiast and amateur scientist into fluorescence photography (the light output can be even further cleaned with ZWB filters). And at only about 5 bucks, what do you have to lose??

Very compact and easy to use. Unsure as to durability. No way to check performance or results, so can’t comment.

I love this. So simple to use. Of course the true measure of this item is how 'clean' is it. Don't know. You just have to trust. Give it a shot.

Must have in my home I don't just use it for my phone.

The media could not be loaded. Bought my sanitizer in October and it's been acting up the past couple of weeks.The device has to be closed to work (fully zipped with the zipper on the magnet). Unfortunately, mine thinks it's open, so when I try to start it up it just flashes red. I re-zipped it, charged it, pressed the power button umpteen times—which usually does the trick—but it's still not working so I think it's finally done. So I got 8 months out of it. I'm kinda irritated it stopped working, but I paid less than $9 for it so 🫤🤷🏽‍♀️ I guess?

something that should have been so easy to use - sadly is not. There is no instructions on this product page anywhere that simply tells you what different colors of light mean. I only see green or red on my device, yet I am seeing customers here mentioning a "blue" indicator light. Again, nowhere on there the manufacturer has a simple how-to that tells you "when it is in session, the color of the light should be X". I put my phone in for a few minutes, the light was green the whole time - and I have no idea whether it meant the device was charged, or the device was actually sanitizing my phone. And as soon as I unplugged the USB charger from the device (after charging for almost an hour), I am unable to use the device on its own (without having to replug it back to the charging source). WHAT A WASTE A FREAKING MONEY.

Works great and easy to use

Because of coronavirus I have been looking for an UV Sanitizer, specially for cellphones. Hopefully this product does what it says it does. The only thing I don like is the fact that the zipper head has to be in a very specific place for it to turn on. I find myself having to move the zipper head around and pushing the “on” button several times until it decides to work. It is a safety feature that needs to be looked into, not very practical and a little cumbersome.