Discover and read the best of Twitter Threads about #pramPAPR

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1/21 What am I up to? Just testing 5 PAPRs against each other as is normal. All of these offer a high level of protection except one. Highly relevant to the #PAPRbuggy #pramPAPR #PAPR Image
2/21 As I have posted before some of the tests NIOSH performs on these is to make sure the air flow stays at 170lpm to maintain positive pressure and a filter test to see that it is 99.97% efficient. I have confirmed all of these stay at 170lpm with included air flow testers.
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