====== Protective Face Masks ======

Due to outbreak of Corona Virus ( [[https://en.wikipedia.org/wiki/Coronavirus_disease_2019|COVID-19]] ) which has been characterized as a [[https://twitter.com/WHO/status/1237777021742338049|pandemic by World Health Organization]], there is much demand for protective face masks. Over the counter supply in many countries is non-existent. The specific effectiveness of masks in relation to COVID-19 is full of conflicting information and actions.

==== DIY Mask Pattern ====

This is a page to document such information as well as sustainable and DIY protective face masks with filter pocket.

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Cut two pieces each of lining and outer shell from prewashed fabrics.

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Sew along the middle seam, right sides together (pattern contains 1cm seam allowance). 

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Clip little V's into the seam allowance making sure not to cut through the seam.

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Fold seam allowance to one side and stitch it down a few millimeters parallel to the existing seam.

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Iron the seam and cut away exess seam allowance.

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On the outer shell narrowly fold over the short edges and iron them flat.

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On the lining fold over short edges 1cm and iron them flat.

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Stitch down edges with zigzag stitch encasing the edge of the folded fabric.

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Pin shell and lining, right sides together and sew along the long edges with 1cm seam allowance.

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Clip V's into seam allowance and trim down to 0,7mm.

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Turn inside out and iron seams flat.

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Fold over short edge of shell towards lining and stitch down leaving enough space to pull trough elastic.

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Cut 80-85cm of elastic band and pull elastic through both tunnels using appropriate tool or safety pin.

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Tie up ends at desired lengt on the bottom or use cor lock stopper.

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Alternatively pull a single piece of elastic trough each side to create loops for ears.

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Insert filter in pocket and replace after use. According to some [[https://masks4all.co/how-to-make-a-homemade-mask/|research]] a paper towel can be used as a filter.

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DIY filter made from three layers of meltblown nonwoven fabric

**
Download pattern here:**
{{ :face_mask_pattern.pdf |}}







==== Commercial Protective Masks ====

The following is research about various commercially available protective masks

  * [[https://multimedia.3m.com/mws/media/409903O/respiratory-protection-against-biohazards.pdf | 3M report published Feb 2020 on Respiratory Protection for Airborne Exposures to Biohazards ]] (VERY GOOD)
  * [[https://smartairfilters.com/en/blog/n95-mask-surgical-prevent-transmission-coronavirus/ | N95 Masks vs. Surgical Masks]]
  * [[https://rzmask.com/products/f2-filter-high-flo | F2 high flow filters]]
  * [[https://en.resinance.de/product/sundstroem-sr-200/| Sundström SR200 Full Mask ]]
  * [[https://www.srsafety.com/us/sr-200-full-face-mask-pc-h01-1221.html | Sundström SR200 technical details]] 
  * [[https://pksafety.com/blog/what-does-p100-mean |  Details on P100 filters]] 
  * [[https://pksafety.com/3m-60926-multi-gas-p100-cartridge-pair/ | 3M 60926 Multi-Gas P100 Cartridge]]
  * [[https://www.cdc.gov/niosh/npptl/topics/respirators/disp_part/p100list1.html | CDC NIOSH-Approved P100 Particulate Filtering Facepiece Respirators]] 
  * [[https://www.3m.com.au/3M/en_AU/company-au/all-3m-products/~/3M-Particulate-Filters-5935-P3/?N=5002385+8711017+3294471746&rt=rud | 3M™ Particulate Filters 5935, P3]] 
  * [[https://www.respiratormaskprotection.com/Respirator-Cartridge-Filter-Reference-Chart.php | List of filters and cartridges]]
  * [[https://www.xamax.co.uk/blog/how-to-pick-a-dust-mask-rating-p1-vs-p2-vs-p3.html#p3-ffp3| Dust Mask Ratings: FFP1 vs FFP2 vs FFP3 - The Ultimate Guide]] 
  * [[https://smartairfilters.com/en/blog/best-materials-make-diy-face-mask-virus/ | Research on improvised facemasks at Cambridge Uni ]]
  * [[https://www.researchgate.net/publication/258525804_Testing_the_Efficacy_of_Homemade_Masks_Would_They_Protect_in_an_Influenza_Pandemic | Testing the Efficacy of Homemade Masks Would They Protect in an Influenza Pandemic]]

**Purchasing Protective Masks Online**

  * [[https://www.amazon.de/dp/B00EJIMZT8/ref=cm_sw_r_tw_dp_U_x_sxTxEbMQGGT9D | 3M 6000 series half mask]] - Amazon DE