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 # Characterizing Filter media
 This is a tracking page to follow the filter efficiency and physical properties of various types of face mask or ventilator filter materials - a central page to compare NOISH-approved N95 masks to new materials developed by the larger CBA COVID repsonse team ([electrospining](https://tourlomousis.pages.cba.mit.edu/cvd-electrospinning/), [rotary jet](https://gitlab.cba.mit.edu/camblackburn/rotary_jet_spinning) ) to DIY materials that could be easily sourced or readily available. 
 
-With the CDC now recommending everyone uses any type of makeshift mask before going out in public to protect against transmitting covid-19, and as more people become caretakers for sick family members, we should get a quantitative measurement of which type of household items are best for transmission protection, breathability, and longenvity. 
+With the CDC now recommending everyone uses any type of makeshift mask before going out in public, and as more people become caretakers for sick family members, we should get a quantitative measurement of which type of household items are best for transmission protection, breathability, and longenvity. 
 
 Similar questions have been asked and answered before - [Effficiency of homemade masks](https://www.researchgate.net/publication/258525804_Testing_the_Efficacy_of_Homemade_Masks_Would_They_Protect_in_an_Influenza_Pandemic), [filtering performance of 20 protective fabrics](https://gitlab.cba.mit.edu/pub/coronavirus/tracking/-/blob/master/docs/FilteringPerformances.pdf), etc. - this projects exists to verify and expand these findings, specialize them to known [SARS-CoV-2 aerosol Characteristics](https://www.biorxiv.org/content/10.1101/2020.03.08.982637v1.abstract), and provide an inital comparison for novel materials.