Looking at the particles larger-than-threshold per m^3, as used in cleanroom air standards, tells a similar story:
> 0.5 um: lab is 46K vs living room 1.1M (23x dirtier), office 1.87M (40x dirtier), outside 2.33M (50x dirtier)
>1um: lab is 1K vs living room 32K, office 59K, outside 78K. You can do the math here.
> 2.5um: lab is off scale low (no counts within the most recent 300-second integration window), living room 2.3K, office 3K, outside 6.6K.
Andrew Zonenberg
npub1cd…z9vpd
2026-07-20 05:23:53 UTC
in reply to nevent1q…7r60
Author Public Key
npub1cddglts94qutscms0qpmk87lel9m8xku7q0wr20u2th5fxvvunqqxz9vpdSeen on
wss://relay.ditto.pubPublished at
2026-07-20 05:23:53 UTCEvent JSON
{
"id": "6fc74ee770835a236f632bbd701e2bdabfa55193aec5758fba7f824839c78a96",
"pubkey": "c35a8fae05a838b863707803bb1fdfcfcbb39adcf01ee1a9fc52ef44998ce4c0",
"created_at": 1784525033,
"kind": 1,
"tags": [
[
"e",
"41b7ba64b506716677d9468d5a13832925f3e7dc94efd4894e1b0468b8a88424",
"wss://relay.ditto.pub",
"reply"
],
[
"proxy",
"https://ioc.exchange/users/azonenberg/statuses/116950632623770379",
"activitypub"
],
[
"client",
"Mostr",
"31990:6be38f8c63df7dbf84db7ec4a6e6fbbd8d19dca3b980efad18585c46f04b26f9:mostr",
"wss://relay.ditto.pub"
]
],
"content": "Looking at the particles larger-than-threshold per m^3, as used in cleanroom air standards, tells a similar story:\n\n\u003e 0.5 um: lab is 46K vs living room 1.1M (23x dirtier), office 1.87M (40x dirtier), outside 2.33M (50x dirtier)\n\n\u003e1um: lab is 1K vs living room 32K, office 59K, outside 78K. You can do the math here.\n\n\u003e 2.5um: lab is off scale low (no counts within the most recent 300-second integration window), living room 2.3K, office 3K, outside 6.6K.",
"sig": "0a1400f67bd4948a5798a22e1ab7e8e8fa55d04eb240837f365bff3b88d342f81af578fee822f8339d0807fc228478e1e925d1581d3ce8119b62d91a45c8ec1b"
}