The W-disinfection bag contains 2 decontamination methods:
A thin layer of nano-grade photocatalyst (TiO2) is sprayed on the internal surface of the bag. By breaking down water vapour in the air which produces hydroxyl radical which can decompose organic compounds, odour and bacteria into harmless substances like carbon dioxide and water.
The same photocatalyst is also coated on a copper plate in which the inner surface of your surgical mask is folded around. Copper ions disrupts the viral coat while destroying bacteria cells.
Since the disinfection technology used for the W-disinfection bag does not require an external energy source, the disinfection properties will not naturally wear off. Meaning the disinfection effect is long lasting.
How long does the disinfection process take?
The duration of the disinfection properties of nano-grade photocatalyst (TiO2) is immediate, but the effectiveness will depend on light intensity.
How do I clean the W-disinfection bag?
The copper plate as well as the photocatalyst used in the disinfection bag have self cleaning capabilities. While the outer surface of the bag can be cleaned with water or any other cleaning agents. Cleaning the inside of the bag may remove the photocatalyst layer.
Why does it seem as though the copper plate has patches of discolouring?
There will be natural oxidation that may occur on the surface of the copper plate which may lead to the discoloured patches. The discolouring is natural process of oxidation and is harmless while not affecting the disinfection effectiveness.