From 534ce04dfe0d4962623507c9ae3673c07a4dcd46 Mon Sep 17 00:00:00 2001 From: Paloma GR <palomagr@mit.edu> Date: Wed, 15 Apr 2020 17:26:27 -0400 Subject: [PATCH] Update README.md --- README.md | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 9b9dc62..29d416d 100644 --- a/README.md +++ b/README.md @@ -33,11 +33,14 @@ asses it to notice our users. We expect that these protective equipment lasts 3 ## Filter Key Parameters to measure [[2](https://scientificfilters.com/wp-content/uploads/2016/03/BasicFiltrationConcepts.pdf)] - Scanning Electron Microscope [SEM](https://en.wikipedia.org/wiki/Scanning_electron_microscope): This tests characterize the materials porosity. Target: < 0.1 um. + - **Update:** Camron did SEM imaging: [SEM](https://gitlab.cba.mit.edu/palomagr/wood-pulp-filter/-/blob/master/SEM.md) - Particle Retention Rate: "In a filtration process, the particle retention efficiency of a depth-type filter is expressed in terms of the particle size (in µm) at which a retention level of 98% of the total number of particles initially challenging the filter is obtained". Target: 95% - Preassure Drop: The higher the pressure drop, the harder it is to breathe. Target: <5.82 [mmH20] at a flow rate of 32 [L/min]. -- We are following [FDA COVID-19 Face Mask Public Health Guidelines ](https://gitlab.cba.mit.edu/palomagr/wood-pulp-filter/-/blob/master/References/COVID19-Face-Masks-Guidance.pdf) + + +We are following [FDA COVID-19 Face Mask Public Health Guidelines ](https://gitlab.cba.mit.edu/palomagr/wood-pulp-filter/-/blob/master/References/COVID19-Face-Masks-Guidance.pdf) All this tests could be replaced by a DOP ([DOP Guideline](http://www.eacoontario.com/pdf/2013/Revised%20August%2027%202013%20DOP%20PAO%20HEPA%20IntegrityTesting%20Procedure.pdf)). -- GitLab