Description These are some professional and convenient UV light testing cards, aimed to provide reliable UV testing result in few seconds. Accurate measurement, perfect display of UVC-UVA effect, can be taken much more easily, bring you good using feeling. Features -Color:As shown.-Material:PVC-Size:7.00X2.50X0.10cm/2.75X0.98X0.04in- Easy to use, just put the test strip into the environment to be tested and wait for a few seconds.- If the inside of the green frame becomes brighter, the surface will be changed to UVC band, which has the effect of disinfection and sterilization.- Suitable for testing disinfection boxes, disinfection cabinets, lamps and other environments- Easy to use, convenient to take and store, can bring you more satisfying using feeling.- To avoid an increasing number of fake and defective germicidal UVC light products on the market today.Packing list: 12 x UV test cards