PVC Anti-Blue Light Test Card test light glasses UV test Accessories card blue light card Generator Card

Testing method:
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 the blue light test light, the discolored area will automatically recover and turn white in 1-2 minutes.

Anti-blue light 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 , the color changes, the stronger the light, the deeper the color change, while the color of the area isolated the blue light blocking has no change (or no obvious change).

There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding. If you do not understand what you can contact customer service at any time, I wish you a happy shopping.