I've been surfing Google Scholar a bit and learned that a common and comparatively less expensive method of measuring particulate matter concentration in air was analysis through gravimetric methods. I was wondering, what sort of materials are used to filter the particulate matter from the air, in an indoor setting, for particles of diameter 2.5 μm? And does the technique consist of measuring the weight difference between a clean vs. used filter? Any reading recommendations would be highly appreciated!

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    $\begingroup$ The American Society of Testing and Materials ASTM has standard methods on such analyses in great detail. Not suprisingly, those documents are pretty expensive to purchase and none of them are free. You will have to access via a decent univeristy library. $\endgroup$
    – AChem
    Commented Apr 20, 2023 at 4:45
  • $\begingroup$ @AChem Appreciate the recommendation, thank you! $\endgroup$
    – shintuku
    Commented Apr 20, 2023 at 12:42


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