Description Are you looking for professional and reasonably priced UVC test strips? Are you looking for a sturdy UVC test strip that will provide you with a comfortable experience? If your answer is yes, please take a look at this product! Our professional UVC test paper can meet your needs. Features - Color: White.- Material: PVC.- Size: About 7.00 x 2.50 x 0.10cm/ 2.75 x 0.98 x 0.04 inch.-A professional test card specially designed for high-power UVC equipment, providing higher analyte contrast under high ultraviolet light. -High precision, simple operation, it's easy 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: 10 x uv test cards