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Comment by exmadscientist | Hacker News Reader

> 3M does not provide product information on which filters are best for government repression

Just get the one that everyone else does: NIOSH TC-84A-0510 with protection against "Solid Particles, Organic Vapors, Acid Gases, Ammonia, Formaldehyde, Methylamine". Every lab buys this filter, or its manufacturer equivalent, for dealing with god-knows-what, because this one will handle just about anything.

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Article is actually wrong and they do provide some advice on this.

https://multimedia.3m.com/mws/media/339742O/3m-full-facepiec...

> Also NIOSH-approved with 3MTM Canister CP3N for use against CS, CN and as a P100 filter (TC-14G-0251) in riot conditions, including those with teargas (non-CBRN).

TC-84A-0510 is not a product. It is a certification for half-face masks + filter combos. The relevant certification for fullface masks+filters is TC-84A-070. (TC-84A-0701 or TC-84A-0704 more specifically)

Handy that McMaster Carr has them 5541T605 Edit, I just noticed you posted the same link that's funny.

I would definitely do a full-face mask. You can buy them at Lowes for painting. The half masks do nothing to protect your eyes. Also try to get Pxx filters as they withstand oils. Some chemicals are oil-soluble and normal Nxx cartridges can’t handle more than one exposure.

You need to provide a 3M part number. I had to clean up silicone oil and was looking up which solvent works best while being safe as possible and it turns out to be Ethyl Acetate. It works well but is quite potent. A few whiffs had me dizzy to the point where I almost lost balance so I immediately stopped and ordered PPE. I bought a 3M 6900 full face mask and 3M 60928 NIOSH filters for organics and acids. I could not smell anything, breathing was very smooth and natural, and no fogging. When I was finished I walk about 20 feet from the project, took the mask off and immediately was smacked in the face with the solvent fumes.

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