Category Archives: Clean Technology

Changing BlueAir HEPA filter

You are supposed to change your BlueAir HEPA filter every 6 months. There is a display that tells you when to change it. I decided to see how long I could use my HEPA filter before changing it. I judged the effectiveness using my AirVisual Node. Today my air purifier finally struggled jeep my bedroom […]

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AQBlue PM 2.5 mask

PM 2.5 masks I wear in Saigon (HCMC), Vietnam

I decided to do a post on all of the different PM 2.5 masks that I wear/wore in Saigon the past year. There are a large number of PM 2.5 masks available in both Saigon and Hanoi. Sadly, many are not real PM 2.5 masks nor do they meet N95 or N99 standards. I first […]

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