Covid 19 Reusable elastomeric respirators: How to test seal, clean and brief overview of the mask

[@richard4079]

Try the 3m 7093 niosh rated filter. It’s specific all for medical.

[@Socal_Geo1]

You should try and use a 3M 7093 enclosed P100 cartridge. They are used in Africa for responders to ebola. This is because the filters are enclosed behind a plastic housing which covers the entire filter. So there were able to just wipe down the exterior of the cartridge and were not forced to replace filters over and over. One filter will last according to 3M, “for the duration of the pandemic wave.” Realistically it should be good for a year or more. I used one for my geology thesis sample collections in asbestos mines. Works great.

[@calincalabrese6260]

I would wipe the filter at the end of the day or intermittently with an alcohol pad. It didnt over dampen the filter. Then I left it in a brown bag or out to dry

[@Socal_Geo1]

@@calincalabrese6260 alcohol is super bad for the filter if it touches the filter material at all, you should consider replacing them quickly. Your filters are made of melt-blown (MB) stretched polypropylene that use electrostatic charges to pull dust and virus particles in and stick to the filter. Alcohol rapidly degrades MB polypropylenes charges. Here is a scientific paper which was published this year in journal Applied Nano Materials, where they tested cleaning your filter material with ethanol (alcohol). This is a quote from their findings in the study: “We found that the filtration efficiency of MB filter significantly dropped to ∼84% and ∼62% after ethanol spraying with 1 cycle and 10 cycles.” Fortunately ebay and amazon still have the 7093 and 7093c cartridges for under $25. :) www.ncbi.nlm.nih.gov/pmc/articles/PMC7323055/#!po=0.877193.

[@AwakeningLibra]

Great info! Thanks!

[@MrKaidman]

i got this mask when i go shopping, this exactlly settup, i gott the 100 with cardridge, and put a regular face mask over the csrtridge to protect for moist, the pink ones he showed i would not say are reusable in hospital inviorment, they get damp fast.

[@calincalabrese6260]

When I was working COVID19 patients I would wash the mask (without filters) routinely and have spares to switch out while others dried

[@medrano_rm]

Hello Nurse Anesthetist Calabrese, is it offensive for medical practitioners to see ordinary civilian with no job-related reasons to wear respirators like that? Thank you.

[@calincalabrese6260]

I would say its not offensive. Unfortunately people will have their opinions. There were many civilians in NYC at the height of covid wearing these masks. They are very effective and more comfortable than the normal N-95 if worn correctly and with the proper filter. Having a safe/approved vaccine is probably the best option since wearing a mask is not always done correctly and the mask eventually needs to be cleaned and the filter replaced. Hope this helps.

[@crsasoccerchamp]

This is awesome! What is the model of the mask you are using in the video?

[@calincalabrese6260]

3M 6800 series

[@MrKaidman]

m3 6000 series

[@jscatfishing2075]

great info so the filters that come with it should be good for covid19? also new to your channel

[@MrKaidman]

they usally dont come with filters, try get the pp3 filters instead of pp2 or n95 if you can, its great set up

[@DDTipsy]

Hi, what do you recommend for long duration use... Full face respirator or half face respirator. I am also an Anaesthetist..

[@MrKaidman]

Full if you dont have protective glasses. I also noticed that you get better seal and fit with the fullmask

[@chandradas2440]

Can I use this mask for cardio workout

[@calincalabrese6260]

Yes you can! As with anything make sure you try it out first at a slower pace. The benefit of these masks is their increase in surface area which means easier flows when exercising. Only draw back is you might get looks. Remember after awhile the filters do go bad and typically that shows up as an increase in difficulty breathing with them on. So have some spares handy and switch them out when necessary

[@christyrananto8330]

How are do you filter the exhalation part? I dont want to wear a surgical mask over it but all the air I exhale is unfiltered

[@hungryalien]

there are 3d printed filter housing for these 3M half face masks. you can cut out surgical mask/electrostatic hepa sheet as filter

[@calincalabrese6260]

Hungryalien great idea do you have a link?. You can also place velcro on the 3m mask at the exhalation port and the exhalation mask. T

[@hungryalien]

@@calincalabrese6260 hi you can google for "3d printed respirator exhalation valve filter" there might be sellers near you. some even post the raw files online so you can print it out yourself if you have access to 3d printer. i got my 6200/7500 all fitted with those from a local seller here in asia.

[@hungryalien]

@@calincalabrese6260 for reference and what can be done. you can check out this guy's instagram: instagram.com/3dprintmanila/

[@verveblack]

full face aint gonna work for glasses right?

[@Momof2happy]

Please could you let me know if I could damage the pink filter if I wiped with Cavi disinfectant ? I just wiped it , your answer will be very appreciated it thank you

[@MrKaidman]

I am not a pro just did my research during the pandemic, what i learned is its ok as long as you dont use the filter if it gets vet from disinfectant, let it dry out. Damp filters seems to be huge issie from what i read

[@MrKaidman]

sorry for spelling...typing on phone lol

[@calincalabrese6260]

Alcohol prep pads work the best. (No science behind this, it is my opinion) It dries quickly and is not toxic like the cavi-wipes