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PM2.5 FACE MASK DISPOSABLE FILTERS 10PK

PM2.5 FACE MASK DISPOSABLE FILTERS 10PK

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Ugly Duckling's PM2.5 filter is a 5-layer activated carbon filter that can be inserted in the side pocket of the Ugly Duckling Face Masks to improve the filtering performance. 

PM25 refers to particles that have diameter less than 2.5 micrometres (more than 100 times thinner than a human hair) and remain suspended for longer. These particles are formed as a result of burning fuel and chemical reactions that take place in the atmosphere.

Filters can be effective for 1 to 3 days, which could amount to 1 to 2 weeks of occasional use. It is also stated that filters can be changed once every week, so a mask should be lasting you for a month or two, depending on the frequency of use.