How To Easily Test UV Protection & Exposure ~ Sunglasses/Windows/UVC Wands

Does ordinary home window glass block UVB? how much?

Does ordinary glass block UVB? How much?

i was looking for a pair of glasses that would make the whole world look like it was under a black light, I guess that does not exist hehe, thanks for the great video, everything seems to block uv light, im su confused about wave lengths and radiation , i had a black light in my bed room for years I guess that was bad?

Great video, I bought the UV card with your link.

How could i test for uv curing light? ( those used in dentistry, have uvv blue light).

I loved your video! Is it better to order a 365nm or 395nm black light flashlight to test sunglasses or does it matter at all?

This video was very helpful👍

What you read as uvc many be uvb ray. This card can not distinguish between uvb or uvc. It shows as uvc even uvb led.

Wow. Thanks

Just found out about this card. Pretty cool.

Can you use this to test clothing??? If not how can I test clothing

Im having polycarbonate installed over my bedroom..(The temps. only get as high as 78 F here (Mexico)....Getting varying info. as to its UV protection capability...worried about wrinkles only...would you do a test for Lexan polycarbonate? thanks

Best is to buy sunglasses from a trusted manufacturer. Now which test helps us to find the trusted ones?

Can you let us know the brand of each glasses you tested? Especially the first
Black one

Thanks! A while ago, I was thinking about buying a UV meter, but they're expensive and clunky, although of course they give you more info. Now I have to find such a card in Hong Kong.

can you test which welding type emits more uv, Stick Welding (SMAW), MIG Welding GMAW, TIG Welding GTAW and Flux Cored Arc Welding FCAW. and if auto darkening helmets really block them 100%. tnx. pardon my english.

nice! im gonne get one of these cards to check my house and buissness windows.

Why not just use 20 dollar bills?

Super cool stuff!

It is helpful.