From 03d4c45fd8830ae56e3dbd81cfb8e06219c7db14 Mon Sep 17 00:00:00 2001
From: Camron Blackburn <camron.blackburn@cba.mit.edu>
Date: Wed, 18 Mar 2020 15:54:38 -0400
Subject: [PATCH] Update README.md

---
 README.md | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index e589cd1..b989470 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,12 @@
-# filter_testing
+# COVID-19 Filter Testing
 
+## mask characterization metrics
+- filtration efficiency 
+- fit factor
+
+## conventional test methods
+- Henderson apparatus: generates closed circuit microbial aerosols from a Collison nebulizer at a controlled humidity 
+
+## Resources
+- University of Cambridge [DIY mask efficacy testing](https://www.researchgate.net/publication/258525804_Testing_the_Efficacy_of_Homemade_Masks_Would_They_Protect_in_an_Influenza_Pandemic)
+- https://smartairfilters.com/en/blog/best-materials-make-diy-face-mask-virus/
-- 
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