4,The light transmittance

The distance between the Blindfold shading pad area and resources of blue light wavelength of 425 nm to 475 nm is 50 cm, the light transmittance is not bigger than 0.3%. The actual test results is 0.11%

5,Biocompatibility

1) The blindfold cell toxicity level be not bigger than Class 1.

2) The blindfold should have no delayed-type hypersensitivity.

3) The blindfold should have no skin irritation reaction.

7,Storage

Packed blindfold should be stored at -10 °C ~ 40 °C, non-corrosive substances and dry, cool, clean room.

8,Validity

Three years.