Pvc Anti-Blue Light Test Card Test Light Glasses Uv Test Accessories Reusable Blue Light Detection Card Generator Card

Description: Use a blue light test light to illuminate the white square area under the back of the anti-blue light test card. The stronger the blue light, the darker the irradiated area will be Natural light contains blue light, which will cause discoloration of the test area and affect automatic recovery. Please test indoors When the test card is illuminated by the blue light test light, the discolored area will automatically recover and turn white in 1-2 minutes. Anti-blue light lenses can effectively block ultraviolet rays and radiation, and can filter blue light When the blue light is irradiated on the test area without blue light blocking lens, the color changes, the stronger the light, the deeper the color change, while the color of the area isolated by the blue light blocking lens has no change (or no obvious change). Specifications: Material: PVC Size: 3.35*2.13in/8.5*5.4cm Color: As Shown In The Picture Package Includes: 1 x Test Card + 1 x Blue Light Note: 1. Please note that the photo does not show actual size, please refer to Description for size details. 2. Please allow differences due to manual measurement, thanks. 3. Due to the difference between different monitors, the image may not reflect the actual color of the item. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.