It's been a while since the last big OpenCPC update -

The new probe that you slide under the respirator to test fit without destructive modification is an interesting development.

https://www.youtube.com/watch?v=R_P0gM5Gudo

#opencpc #fittest #cleanair

OpenCPC Update - December '24 Part 1

YouTube

Don't sleep on fit tests and eye protection. SARS is gonna keep getting better at transmitting/infecting. Your health and life are on the line.

https://zeroes.ca/@[email protected]/112535512950083899

#FitTest #BetterMasks #EyeProtection

sophia•of•the•Crows🐦‍⬛

I’m getting a lot of reports from friends, pts, acquaintances of people getting what is definitely *covid* — but they’re STRICT maskers. The infections are not triggering on tests for covid, flu or RSV. Does anyone have a clue what’s going on?

Q+A / How to Post

The previous post's instructions you may have seen here is **not recommended anymore!** Instead, follow the steps below:... #cpcsupport #8020agang #niosh #8020a #8020m #8020 #tsi #m41pats #openaeros #fittest #fittesting #portacount #CPCSupport

https://fedia.io/m/CPCSupport/t/516540

Q+A / How to Post - CPC/PortaCount Help - Fedia

The previous post's instructions you may have seen here is **not recommended anymore!** Instead, follow the steps below:...

Sick of being #sick ?

It's not too late!

#MaskUP

Whether you're #Vaccinated or #Unvaxxed

Don't want #Covid or Covid again or just don't want a #Cold or #Flu or #RSV or whatever #MysteriousRespiratoryIllness is out there.

#Masks WORK!!

#ButNotSurgicalMasks and not #CLothMasks Be sure to get an #N95 (head straps) or #KN95 (ear straps) or #Elastomeric (like #Flomask)(pictured in my profile) or better and #FitTest !

Questions?

Tagging local because I'm in the #PNW #Seattle @WashingtonState

The black Laianzhi KN100 HYX1002 in medium and large.

Quick disambiguation: the medium has lettering in the middle panel and a straight-edged top panel, while the large has lettering in the bottom and a wavy-edged top panel. Not easy to tell just from the packaging.

#respirator #kn100 #laianzhi #FitTest

The #OpenCPC condensing particle counter in the wild! @masknerd at the #AAAR23 American Association for Aerosol Research conference.

https://twitter.com/OpenAeros/status/1709427372737356014

#FitTest

OpenAeros on X

Wow! What a great poster session at #AAAR23 where @masknerd got to present the latest on the OpenCPC. This isn't just all theoretical though, if you look close you can see the first OpenCPC in the wild, quietly measuring away.

X (formerly Twitter)

Repost of @masknerd 's tweet about his upcoming talk at the European Aerosol Conference about the OpenCPC: The world's first open source condensation particle counter.

Commercial particle counters are prohibitively expensive unless you can eBay an old working one. The Portacount 8020A I use for respirator fit testing is a discontinued model from decades ago.

Would love to move to unit that we can maintain and keep calibrated if the OpenCPC becomes a reality.

#EAC2023 #PortaCount #FitTest

I think we'd best have a conversation about mask efficacy in the context of time-to-infection, viral load and other highly-speculative estimations that have been proffered over the course of the pandemic thus far.

You cannot build a rock-solid scientific model on top of such things.

#CovidIsAirborne #MaskUp #WearARespirator #N95 #P100 #FitTest #Wuhan #Alpha #Delta #Omicron #ForeverOmicron

Can someone share the best mask recommendations for COVID currently? There are some pictures with in-depth test results and comparisons - can people reshare those pictures? (Trying to find them, struggling)

#covid #sarscov2 #masks #respirators #corona #coronavirus #fittest #mask #masking #airborne #virus #pandemic

Drager 1920 M/L: Sanity tested a sample from a new Ebay box before stocking up a family member for an overseas trip. The printing on the M/L looks more washed out compared to the S - no particular concerns about the vendor but I may as well make sure.

I'd already passed in the S size, but it looks like the M/L also fits. The M/L scores even higher but feels looser around the nose/chin. Will have to stress test later.

#FitTest #PortaCount #Respirator #Drager #FFP2 #8020AGang