UV card measures the intensity of the UV rays that burn your skin,UV burns can cause skin cancer and other illness.
New High Tech, Non-Toxic, environmentally friendly detection matrial that is printed on the card to measure the UV rays of the sun.
Card changes colors from White to Dark Purple based on the UV ray strength. Chart recommends different SPF sunscreen for best protection.
With this UV Test Card(2-pack), you can get a result in seconds about the type of UV light (UV or UVC)that your uv sanitizer device is using. Can be used over and over again.
WARM TIPS: For testing some capped UV equipments, we suggest you can use a phone or camera to take videos inside the equipment.