EIDEAL™ | UV & UVC Test Card & UV Intensity Test Card | 3-in-1 UV Test Card | UVA & UVC Light Identifying Card | UV Bulb & LED Intensity Reading Card | UV Dosage Indicator Card | UVB Tester

Very good, easy to read, and a cheap choice for measuring uv light. It reads fairly fast and works well!

Worked as expected and seems accurate.

I had need of a way to tell if there was UV in a particular area and found this card--a simple, inexpensive, easy-to-have-handy device.I first tested it by exposing it to sunlight and it quickly showed there was UV radiation in the area. I then exposed it to an LED light bulb and there was no UV indicated--which is what I would expect from an LED light source.I found the exposure scale on the back to be particularly useful as it gives an idea of the amount of exposure over time and can be good when you need to know if something has received a minor or major dose of UV. This could range from exposure to sunlight to exposure to another source.Overall I find it very useful and am glad for my purchase.

This UV test card will check the presence of UV A/B and measure its strength.It will also indicate the presence of UVC but cannot measure its strength.

Works good, I satisfied

Why did you pick this product vs others?:What the listing doesn't mention is the UV-reactive ink loses effectiveness over time, so this card will be useless after 2-3 weeks. It's fun while it lasts but unless you want to continue paying $9~ for each replacement this is NOT value for money.

These are awesome but you should read the directions and also consult the product images here, to be sure you understand the UVC glows green but doesn't stick, and regular UV detection stays for a while on the card. This has actually helped me catch other products that aren't truly disinfecting.

Caught UV, didn't catch UV-C. Returned.