6-in-1 QUANTADOSE® Multi-Wavelength Bi-Luminescent UVA/UVB/UVC/Far-UVC Light Reusable Professional UV Test Card

Work great. I have checked windows, glass block, car windows with and without tint.

This is a great tool that I find to be an absolute must for testing all kinds of glasses worn outdoors to ensure they protect my eyes from damaging UVA and UVB rays. It is very easy to use, and the maker has a detailed explanation page on their website; see the QR code on the back of the card (and in one of my photos). While it also tests for UVC to test the veracity of sanitizing equipment, I got it primarily to test glasses along with a blacklight. I did a little research and spoke to the creator and owner of QuantaDose UV detection cards, and also read up on “Protecting your eyes from the sun’s UV light” published 7/5/22 by the US government’s National Rye Institute (NEI) on the National Health of Health’s (NIH) .gov website. According to this article, UVA and UVB can be damaging to the eyes and the article states, “Look for lenses that provide 99 to 100 percent protection from UVA and UVB or marked as having a UV400 rating.” In testing glasses, I have learned labels cannot always be trusted and sometimes it can be in the user’s favor (and in some cases there is no label at all). I did a video (1m 45s) testing these sunglasses and other glasses regarding UV protection with the QuantaDose card and a 365nm blacklight. VIDEO – My short (1m 45s) attached video shows the following: (Note I wore UV400 glasses while using the blacklight for this testing video.) 1 - The front and back of the card and 365nm blacklight 2 - Showing how the card turns violet when exposed to longwave UVA and UVB light 3 - Testing a pair of clear safety glasses that DO protect against UVA and UVB light 4 - Mislabeled glasses that do NOT protect from blue or UVA and UVB light 5 – Tests on all 3 pair of these sunglasses; they DO appear to protect against UVA and UVB light Given what I learned about eye health and UV light, I will be testing all of our sunglasses, work glasses, etc., for UVA and UVB protection for wearing outside (even on cloudy days), and all indoor reading and other glasses for blue light protection (using a blue light and a blue light detection card) …the 365nm blacklight I got and this UV detection card to me are a necessary and great investments. The credit card sized card is made of nice quality plastic and is the 3rd iteration (and most versatile) of QuantaDose’s UV cards. To me it worth far more than the $10.99 US price at the time I purchased it and is earns a well-deserved 5 (plus) stars in my book.

Instantly glows in the presence of UVC and reuseable too. Was able to confirm that both of my uvc lamps were functioning as expected

This little card can give you a good idea of the presense and strength of UV light, and also its approximate wavelength. For me, the greatest feature is the ability to quickly detect the presense of UV-C band light. You'll often see "germ sterilizing" UV wands advertized on Amazon, but how do you know they really are putting out UV-C band light? UV-A and UV-B bands won't do the job. I'm happy to say that a UV wand I bought on Amazon passed the test. You'll see some reviews of UV wands that don't pass this test, and should be avoided. A great alternative to very expensive digital UV light meters.

I use a UV flashlight to verify card operation, then test sunglasses after card verification. After about a month of use - the card wore out (reducing review to 4 stars). Leaving it on the kitchen table in ambient sunlight (not direct) apparently killed it. These cards work but have limited life due to the cheap detection material used. When not in use - be *sure* to cover it up, put in wallet etc. Something they *need* to put in instructions/advertising.

Confusing images! Providing no instructions of use, nor clear explanations of images ! Would not recommend!

I haven't played with this too much yet. Was a purchase of curiosity and potential, not of a need. Its about the side of playing card. It comes in a nice black plastic pouch. Not sure yet if what we see is a REACTION on the surface of the material, or if it's just a clever way of allowing our eyes to perceive the existence of the rays through pigment interactions and reflection of light. Like that if shifts the frequency in a way that creates a visible artifact. Not sure yet. But it works. In direct sunlight, and dark it was as described. For now I keep it in the plastic pouch. But if the card does react directly and needs darkness to restore I might like to keep it in an insulated felt bag instead. In terms of cost to value ratio, I think this was well worth it. Just cheep enough to entice me to make the purchase and test it out.

First of all, this works great for detecting and identifying UVA vs. UVC. The problem I have is that I have 3 light sources to test. They are UVA 365nm, UVB 310nm, and UVC 255nm. The UVC detection is not specific enough, so the UVB light shows as UVC on the test card. I understand that this is not specifically designed to identify UVB, but according to the card, UVB should be indicated as longwave, along with UVA; however, it is not. My specific use case needs UVC to be detected, but not over ~280nm wavelength. If your needs aren't as demanding as mine, this is a great, quick, and easy UV detector card with more features than the competition, and for that purpose it would be 5 stars, but it doesn't fit my needs.

It doesn't work at all. Regret buying it

Bought this to test some UV filters and UV lights and based on rudimentary testing using these consumer products, the test card works reliably.

Perfect tool for hobby and proffesional use.