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. Suitable for testing disinfection box, disinfection cabinet, lamp and other environment. Features - Color: Assorted Color-Material:PVC- Size: 7.20X2.70X1.00cm/2.83X1.06X0.39in - A professional test card specially designed for high-power UVC equipment, providing higher analyte contrast under high ultraviolet light. -High precision, simple operation,UVC Test Cards areeasy to carry with small size. - UVC test card for unprecedented quality control of UV analyte production and calibration. - Take one under the light. When the color of the card changes from white to dark purple or light green, your device is valid. - Sufficient number gives you the opportunity to repeat the test, and the accuracy of the result is guaranteed after repeated tests. Packing list: 30 x Testing StripsProduct Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.