Addendum: If someone makes the excuse that they’re not wearing a respirator because of a requirement to fit test, and there is a reasonable expectation of safety, document it. Qualitative fit testing is well under $1000, so there really is no excuse to not fit test.

Also, if you are in a area deemed hazardous or potentially hazardous by OSHA or the CDC, avoid modifying your respirator, and wear NIOSH-approved equipment.

You may also want to grab some OSHA-approved irritant smoke too (Like the Verifit).

Although no individual should be obligated to do this, (and tbh, it may not help you), it would be best not to leave any potential stone unturned.

Additional downloads for MultiVapor and GasRemove can be found here: https://gerryowood.com/other-documents-and-computer-programs.html Those unwilling to use proprietary software can use OSHA models, linked here: https://www.osha.gov/etools/respiratory-protection/change-schedules/math-model

When should I change my chemical cartridge? https://fedia.io/m/CPCSupport/t/1357766/Need-to-know-when-to-change-a-chemical-cartridge-There-s

42 CFR 84 (N95) respirator guide. Comment here: https://fedia.io/m/CPCSupport/t/1152206/A-Quick-and-Dirty-42-CFR-84-read-N95-Respirator#comments Read here: https://en.wikisource.org/wiki/NIOSH_Guide_to_the_Selection_and_Use_of_Particulate_Respirators_Certified_Under_42_CFR_84

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Did an irresponsible rail company derail their trains… and spill a bunch of vinyl chloride in your area? Here are some tips: https://fedia.io/m/CPCSupport/t/962630/Tips-if-you-need-to-use-a-Chemical-Cartridge

We need documentation! See the pinned post at: https://fedia.io/m/CPCSupport/microblog

Exhalation valve danger… https://fedia.io/m/CPCSupport/t/821794

Subscribing + New Account Tips

You can sign up on fedia.io, and of course, you could always post using your Mastodon account by mentioning @CPCSupport@fedia.io in a pinch (as described above).

You can even follow @CPCSupport@fedia.io (a subscription!) at the risk of your timeline being clogged, should @CPCSupport@fedia.io (or another community/magazine) become popular.

If that becomes the case, you could follow just me, @CPCSupport@fedia.io

And finally, if you need a refresher on how to post a comment, click here.

But let’s say you want to stop having a clunky experience interacting with the Threadiverse via Mastodon. Hey, do you want to be a part of the ActivityPub Fediverse (Threadiverse) that somehow gets as much engagement as Mastodon with a fraction of the servers, and so far, the only majorly competitive Reddit replacement (that also interacts with Mastodon?!)

You can create an account at one of the various Lemmy and Mbin servers/instances you can find on fedidb.org. (With the usual caveat of: browse around before you sign up)

Or… you could just create an account on Discuss.Online, like I have.

With a Lemmy/Mbin account, you can just subscribe by searching !CPCSupport@fedia.io and not have to worry about mentions and all that nonsense.

BONUS TIP!!! Check out old.lemmy.world!

For questions, DM @fediversefittester@fedia.social (fedia.social, not io). Lemmy users can send DMs to @fediversefitttester@fedia.io on Fedia.io.

Unfortunately, it doesn’t seem like Lemmy DMs and Mastodon DMs interoperate. And Mbin has chosen to support Lemmy DMs. So be it…

Have you seen this accessory? Part 2 https://fedia.io/m/CPCSupport/t/743144/A-Wanted-Non-PortaCount-TSI-Fit-Tester-The-8587A

Someone bought an 8010. Let me reiterate: Do not buy an 8010. It requires 100% reagent grade alcohol, which is expensive to ship, and on top of that, as I’ve pointed out before, it hasn’t been serviced since 2001. There’s a very good chance it could be dead.

Plus it can only display four digits on screen. Do you really want to limit yourself like that?

Have you seen this accessory? https://fedia.io/m/CPCSupport/t/709349/A-Rare-PortaCount-Accessory-The-TSI-8120

Avoid the ‘Service’ message. https://fedia.io/m/CPCSupport/t/646181/The-Service-Message-and-Tips-on-how-to-Avoid-Recalibration Paste the link into your instance’s search bar before replying.

For the record, each salt tablet that came with my N95-Companion weighed 1.0 gram, or 1000 mg, not 100 mg.

PortaCounts seem expensive and rare. How do I fit test without a PortaCount? Look here: https://fedia.io/m/cpcsupport@discuss.online/t/604686/Qualitative-Fit-Testing-Summarized Wiki Version: https://wiki.discuss.online/view/CPCSupport:_Qualitative_Fit_Testing

Some things have changed since this was initially written. Here’s most significant one:

NEW: Probe Acquisition Tips: Turns out the standard OD tubing the PortaCount uses corresponding standard OD tube parts. The parts you should be paying attention to are: 4mm Stud Push-On Retainers OD Phosphate and Canvas Snap Fastners, 3/8" Post.

Note, however, that since this is industrial materiel, you may not be able to get probes for much cheaper than TSI themselves, so better to DM someone for bulk purchases.

Fit Factor, Total Inward Leakage, and Assigned Protection Factor https://fedia.io/m/CPCSupport/t/601606/What-is-a-Fit-Factor-Plus-TIL-APF

Fit test protocols and procedures, including ones you don’t need a PortaCount for? https://fedia.io/m/CPCSupport/t/598785/Quantitative-and-Qualitative-Fit-Test-Timings-and-Guidance

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