Enhanced Anti-Viral Protection for Surgical Masks (Covid19)

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How to make a salt-coated filter for surgical masks as described in the paper "Universal and reusable virus deactivation system for respiratory protection" 04 Jan 2017 Nature Scientific Reports.
This is a hands-on description of a published paper, however the effectiveness of this procedure as an anti-viral treatment of surguical masks is NOT PROVEN outside the data as given in the paper by the authors. I do not endorse this proceedure for anyone else - my video represents my interpretation of the above paper and my opinion on its effectiveness only.
Here is the link to the paper! www.nature.com...
Thanks to: Michael Slominski, for productive discussion and ideas, the most excellent Dr. Tom Gyory, DDS for hands-on detailed discussion of masks and excellent insights, and Chip Sleeper for critique and thoughful suggestions.
One possible source for polysorbate20: www.amazon.com...
Recipie:
100 ml distilled water - bring to between 90-100 degrees C
Add 29 grams salt (not iodized)
Dissolve until clear, cool
Add 1/4 teaspoon polysorbate 20.
Pour cooled solution into a spray bottle, spray filter layer until wet, dry at room temperature overnight. Alternatively, soak filter in salt water if you can remove it (3-ply mask, not possible for 2-ply masks).

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6 окт 2024

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Комментарии : 47

@Joehtosis 4 года назад

Thank you so much for this information. I heard it mentioned off hand on Dark Horse Podcast and then found this, showing the research and demonstrating a practical way to put it to use. This is very much appreciated, you've done a great service.

@charlottedaniels2412 4 года назад

Thank you. I would love the directions.

@Ulyssestnt 4 года назад

Im testing these out today.

@kellyaraneda 4 года назад

wonder if you need the surfactant if you're treating a DIY mask made of cotton fibers.

@BronxGrrlX 4 года назад

Surfactant is to help the salt solution penetrate and stick to hydrophobic fibers so I wouldn't think it is necessary for cotton or any fiber you can wet (i.e. if the liquid doesn't bead up). IMHO!

@dianepeluso8269 4 года назад

Look at you with a RU-vid channel! You go my old friend❤️

@BronxGrrlX 4 года назад

hey Diane! Hi!! Hope you're well - email me!!!

@BronxGrrlX 4 года назад

@@dianepeluso8269 just emailed you! I removed your text with your email just in case ~

@ikebipe 4 года назад

In the paper, the filter media was submerged in the saline solution rather than sprayed. This is why I have doubts about this method achieving the same effect given that it's using less liquid thus less salt for crystal formation.

@BronxGrrlX 4 года назад

Just spray more, all you can do is saturate the fabric. Feel free to submerge it if you wish.

@karenyair8687 4 года назад

Thanks so much for taking the time to make and share this video. Is it possible just to spray the solution onto the outside of the mask? The (few) masks we have do not have filters.

@BronxGrrlX 4 года назад

What sort of masks? If a surgical mask (the rectangle ones), you are asking about something not studied by the authors, in which case you'd need to use your own judgement. IMHO, I think it is ok, but I can't prove it so that's my opinion only! As for N95 masks, there is controversy about this as some papers have shown that the solution makes the filter fibers mat up, reducing the ability of the mask to filter. It has recently be published (I don't have a reference, sorry) that some hospitals are baking N95 masks at 158 degrees F for 30 minutes, and they have shown this inactivates the virus, so the masks then become reusuable. You have to be careful with the ear-loops, if they melt you can sew on new loops. Good luck!

@BronxGrrlX 4 года назад

Stanford researchers confirm N95 masks can be sterilized and reused with virtually no loss of filtration efficiency by leaving in oven for 30 mins at 70C / 158F" m.box.com/shared_item/https%3A%2F%2Fstanfordmedicine.box.com%2Fv%2Fcovid19-PPE-1-1

@tomstrong4764 3 года назад

Thanks for the vid! How did you arrive at the polysorbate20? is it part of the original research recipe?

@junherrera9343 4 года назад

Hi, WHERE CAN I FIND THAT STUDY ABOUT SALT FILTRATION, TGE REPOET IN A PAPER YOU SHOWED. PLEASE REPLY. TY

@DAV632 4 года назад

Thanks for the tip. Do you recommend the same technique with N95 masks. I know there's no inner filter on N95s but a spray on the inside should have the same effect, no?

@BronxGrrlX 4 года назад

The original paper tested the inner filter layer of surgical masks only, showing data on the effectivness of the salt treatment. No such study was done for N95 mask material (nor for R95 and P95, these masks also come in 2 other filtration sizes, N/R/P 99 and N/R/P 100) so I can't say. I have read that wetting the filtration material in the N95 masks (and assumedly all those others as well) causes matting of the filtration fibers, making those masks filter less well. So you will have to decide for yourself if this salt treatment would work on N95 masks. IMHO, yes I would try it. But that's me.

@DAV632 4 года назад

@@BronxGrrlX Thanks. One thing I read recently was in fairly DRY (under 40% humidity) air the transmission rate for CoVid is very high - up to 80%. That changes with higher humidity - 60% and above - the transmissibility drops to 14%. You can confirm these #'s fairly easily by observing flakes of dust floating free in a shaft of sunlight in a room. As the humidity goes UP you see fewer and fewer specs and those specs of dust are what the viruses are sticking to. Bottom line is if malls, office building etc etc raised their humidity levels the person to person transmission would - should - drop substantially

@houstongallego1718 4 года назад

Possibly wouldn't hurt to try the spray but those masks are not good for this virus. It is way too small and spreads way too fast. From symptoms to death most average 8 days.. do not risk being weaker to the second attack. Try to avoid the first one There are some air filters that catch .1 size microns for 50 bucks. But be mindful of the danger when cleaning the filter.

@BronxGrrlX 4 года назад

@@houstongallego1718 For reference, the covid19 virus is 0.3 microns in size and an N95 mask is designed to catch on average 95% of virion particles that size. No one knows if reinfection is possible and if it is, if it is more dangerous. But I agree, definitely better to avoid first infection until we know more. I wouldn't clean the filters but toss. I read that if you have a limited number of filters you could put used filters aside in a safe area (not your living area) for 30 days and thus cycle through the ones you have. But i have no idea if this is safe - only saying I read it. If interested you could look that up to fact-check it.

@DAV632 4 года назад

@@houstongallego1718 Yes. I'll have to try and remember that - DO NOT LICK THE FILTER TO CLEAN IT!! :-))

@gingerjeep643 4 года назад

Could you use lecithin instead of the poli(whatever)20 ?

@BronxGrrlX 4 года назад

Wow, that's a good question! I don't know but if you want my opinion, which is unproven and untested, I'd be comfortable trying it. You can also order the polysorbate online many places including Amazon, it is still available, should be about $10 for a small bottle.

@SUFLETLIBER9 4 года назад

how about using alcohol instead of the polysorbate 20?

@BronxGrrlX 4 года назад

Alcohol (presumably you mean rubbing alcohol!) is not a surfactant. To wet the hydrophobic fibers in the surgical masks, it's likely not a hydrophobic enough solvent. That being said, feel free to try it of course - but keep in mind it's not what the researchers I cited have tested experimentally.

@SUFLETLIBER9 4 года назад

@@BronxGrrlX thank you very much