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A comment on DIY Positive Pressure Suit. Parent comment

Re:DIY Positive Pressure Suit by dragonwriter on Sunday March 22, 2020 @10:30PM (#22660737)
The nominal rating is stricter, but is the certification process that the claims of the nominal rating are actually met as strict?

There's what it says it does, and the probability that it actually does what it says it does. Those are two different considerations.

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Re:DIY Positive Pressure Suit by Johnny555 on Sunday March 22, 2020 @10:36PM (#22660764)
That's a different argument -- whether or not the HEPA filter really is a HEPA filter.
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Re:DIY Positive Pressure Suit by jlokier on Sunday March 22, 2020 @11:29PM (#22661009)
And whether the seal around the HEPA filter that the HEPA filter is put inside is airtight.

E.g. I've seen some vacuum cleaners which have HEPA filters reviewed as a bit useless at filtering because the particles flow through small gaps around the filter.

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