Sew Face Masks Philadelphia -#masks4all #MutualAid
20 Jul,
10 tweets, 4 min read
inquirer.com/education/phil…
Via @oonagoodinsmith @frankkummer @newskag
#HEPA is best; #keepitsimple #phlED
Via @oonagoodinsmith @frankkummer @newskag
#HEPA is best; #keepitsimple #phlED
“Ozone, a lung irritant, is produced indirectly by ion generators & directly by ozone generators. While indirect ozone production is of concern, there is even greater concern with the direct, and purposeful introduction of a lung irritant into indoor air.”
epa.gov/indoor-air-qua…
epa.gov/indoor-air-qua…
Oxidants are an irritant
https://twitter.com/kprather88/status/1415713425003487233
HEPA is a the proven technology.
Unfortunately, “space zappers” have a better marketing team. Lessons learned from other school districts should be applied; local experts consulted.
Unfortunately, “space zappers” have a better marketing team. Lessons learned from other school districts should be applied; local experts consulted.
https://twitter.com/shellymboulder/status/1413493967014875136
It’s worth asking Dr Hite if replacement filter cartridges will be included w/each unit that was purchased, along with instructions to teachers or building engineers on their replacement.
True filters absorb virus in aerosol particles and must be cleaned or replaced- like masks.
True filters absorb virus in aerosol particles and must be cleaned or replaced- like masks.
A study on portable HEPA filters, even with a basic technology, found 90% reduction in aerosols within 30 minutes with a class actively in session, and looked at noise impact as well. medrxiv.org/content/10.110…
The CDC suggests HEPA:
“Consider portable air cleaners that use high-efficiency particulate air (HEPA) filters to enhance air cleaning wherever possible, especially in higher-risk areas such as a nurse’s office or sick/isolation room.”
cdc.gov/coronavirus/20…
“Consider portable air cleaners that use high-efficiency particulate air (HEPA) filters to enhance air cleaning wherever possible, especially in higher-risk areas such as a nurse’s office or sick/isolation room.”
cdc.gov/coronavirus/20…
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