Our UV light testing card set is designed to help you accurately measure UVA and wavelengths. These cards are ideal for ensuring the effectiveness of your UV lights, whether used in a household or setting. Simply expose the card to the UV light source, and the indicator will change color to show the presence and intensity of the UV light. Features -Color:Multi -Material:PVC -Size:7.00X2.50X0.10cm/2.75X0.98X0.04in -Firm material: crafted from pvc material, these test cards are designed to be and , ensuring longterm use without wear and tear - testing: capable of testing both uva and uvc wavelengths, these uvc test papers cater to a variety of needs, making them versatile for different applications -Easy operation: with a simple plugandplay design, these test cards require no additional setup, making them userfriendly and convenient for quick testing -Clear display: the uvc test strips provide a clear display of light wavelengths, allowing for accurate assessment of light level and ensuring precise results -Versatile application: suitable for various light testing scenarios, these uv identifying cards are ideal for use in laboratories, factories, and other environments Package list: 20 x testing cards