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Read more about the article Filtration testing Methods

Filtration testing Methods

  • Post author:Mark Glover, MD
  • Post published:May 19, 2020
  • Post category:PPE/Respiratory Protection

Several people experienced interest or legitimate skepticism in the method in which I am testing N95 and KN95s. I wanted to explain how I am doing it and why I…

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Helpful Links

  • Post author:Mark Glover, MD
  • Post published:May 15, 2020
  • Post category:COVID19/PPE/Respiratory Protection

CDC NIOSH N95 List of Manufacturers with Model number and approval number List of Chinese made KN95s authorized for emergency use by the FDA Models that were removed from FDA…

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Read more about the article Replacing head bands from the National Stockpile

Replacing head bands from the National Stockpile

  • Post author:Mark Glover, MD
  • Post published:May 13, 2020
  • Post category:PPE/Respiratory Protection

Many physicians have received Kimberly-Clark N95s from the National stockpile. We have tested the Kimberly-Clark N95s we have distributed from the National Stockpile. Initial CDC testing had shown that these may or…

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Read more about the article When to replace your 3M particulate filters

When to replace your 3M particulate filters

  • Post author:Mark Glover, MD
  • Post published:May 11, 2020
  • Post category:PPE/Respiratory Protection

There is much debate over how long your filters will last for. I have heard physicians says anywhere from 40 hours, 30 days to 2 years. My answer is that…

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Your medical air is a source for a Supplied Air Respirator (SAR)

  • Post author:Mark Glover, MD
  • Post published:May 9, 2020
  • Post category:PPE/Respiratory Protection

So stick with me, because this sounds a little crazy at face value, but the more you think about it, the more it makes sense. I have still yet to…

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Read more about the article Mask Filtration Database

Mask Filtration Database

  • Post author:Mark Glover, MD
  • Post published:May 8, 2020
  • Post category:PPE/Respiratory Protection

I have been closely working the Travis County Medical Society as the PPE task force lead during the COVID crisis. At TCMS, we not only want to provide you with…

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Read more about the article Your FDA registration means nothing to me

Your FDA registration means nothing to me

  • Post author:Mark Glover, MD
  • Post published:May 8, 2020
  • Post category:PPE/Respiratory Protection

Chinese Factory: We made a mask. We claim a Substantial Equivalence to this predicated mask XYZ.  FDA: OK cool. Here’s your 510(k) pre-market registration That’s literally all it means to…

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Read more about the article But wait, the coronavirus is only 0.1 microns?

But wait, the coronavirus is only 0.1 microns?

  • Post author:Mark Glover, MD
  • Post published:May 6, 2020
  • Post category:COVID19/PPE/Respiratory Protection

As viruses go, the coronavirus is a very small virus. This is a great picture of and comparison of various viruses by size. An N95 mask filters 95% of 0.3…

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What the flame test means

  • Post author:Mark Glover, MD
  • Post published:May 6, 2020
  • Post category:PPE/Respiratory Protection

So apparently lighting you N95 on fire (or not lighting on fire to be more precise) is a way of validating its authenticity. There is some truth in this, but…

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What the water test means

  • Post author:Mark Glover, MD
  • Post published:May 6, 2020
  • Post category:PPE/Respiratory Protection

Of course, I was on a PPE Zoom meeting when I first heard of the water test. Someone said their mask was validated because it held water.... "What does that…

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Why your KN95 fails a fit test

  • Post author:Mark Glover, MD
  • Post published:April 27, 2020
  • Post category:PPE/Respiratory Protection

Your Chinese made KN95 has two problems and surprisingly, it's not the filtration. It's the seal. In order to effectively filter the air you breathe, the air has to pass…

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