20pcs Light Test Cards UVA UVC Test Cards Light Wavelength Indicator

Descriptiontest card, technology to provide reliable UV readings in seconds. Monitoring UV along with verifying that the optimal UV germicidal light wavelengths are being used in your disinfection process. Features- Color: White- Material: PVC- Size: About 7.00X2.50X0.10cm/2.75X0.98X0.04inch- Professional test cards designed for high power UVC devices offering a higher cards to analyte contrast on highly UV.- Resilient material for high power exposure without aging/discoloration- UV test cards for unprecedented quality control for UV production and calibration.- When the color of the cards changes from white to dark purple / light green, your device is effective.- To avoid an increasing number of fake and defective germicidal UVC light products on the market today.Package Including20 x UV test cards

• Display of results: UV and UVC resin tests must be viewed directly under the light you are testing. When not illuminated by light, the letters disappear instantly. The UV strength test surface can be in a closed box or directly under the light, your device is effective when the color of the card changes from white to dark purple/light green
• Reuse: Professional light tester cards designed for high-power UVC equipment, providing higher cards to analyze the contrast of strong ultraviolet rays, can be repeatedly
• Easy to use: The cards are designed to be easy to use and easy to understand. There are no confusing instructions, and the cards clearly indicate the test results
• Package Included: A set of test cards contains 20 products, in quantity to meet your usage needs in order to avoid more and more counterfeit and defective UVC lamp products on the market today
• To avoid an increasing number of fake and defective UVC light products on the market today