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Hi Mountain Equipment, I'm wondering when to replace or how long does the filters last for? Thank you
Here is some questions and answers that is direct from Buff website:
- Can I use the BUFF® Filter Mask without the filter?
We recommend always using the filter for maximum performing and filtration efficiency. The filter has a special design to fit in the BUFF® Filter Mask that has been tested and meets the performance requirements of Bacterial Filtration Efficiency and breathability of standard EN14683:2019 Medical Face Masks obtaining type I and II classification.
- How long can I use a filter before it needs to be replaced?
Filters for BUFF® Filter Mask provide 98% Bacterial Filtration Efficiency up to 24h use, depending on the intensity of use and environment conditions. For maximum filtration efficiency you should replace them on a daily basis.
So depending on the use, as long as the time period using the mask covers 24hrs you should be OK to use it for more than just a day up to a week (depending on how long you wear it each time you put it on). If using it over multiple days I would recommend to cut down the 24hr use period to around 18-20 hrs.
There is no exact guidelines other than the 24hrs, so take my recommendation as a guide only and change the filter more regularly if you deem it neseccary.