According to the CDC, a concentration of 3% hydrogen peroxide can inactivate rhinovirus — the respiratory virus that primarily causes the common cold — within eight minutes. In addition, a 2018 study found that hydrogen peroxide was more effective in killing some forms of bacteria than the quaternary ammonium compounds found in many household cleaning products.
The typical 3% hydrogen peroxide concentration found in stores can be used as a disinfectant, or you can dilute it to a 0.5% concentration, which still has some effectiveness, using a mixture of 2.5 parts water and 0.5 parts 3% hydrogen peroxide.
Before disinfecting any surface with hydrogen peroxide, the CDC recommends using soap and water to clean the area. Once you've done so, you can pour or spray hydrogen peroxide on the surface and wipe with a paper towel or sponge.
After you've used hydrogen peroxide, make sure to leave it on the surface for at least one minute before drying to give it enough time to kill pathogens.
Chemical Disinfectants information - CDC -
Guideline for Disinfection and Sterilization in Healthcare Facilities (2008)
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International Council of Associations for Science Education (ICASE);
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On Monday, June 22, 2020, 10:33:28 AM EDT, Jarral Ryter <jryter**At_Symbol_Here**western.edu> wrote:
Thanks for that article.
Any comments on cleaning chemicals? I was looking at products and active ingredients. The amount we will be expected to use in a class/lab setting will expose people to large amounts of the chemical repeatedly. Cost is also a factor.
I am looking for the best chemical that could be purchased cheaply, in bulk and would not cause harm (asthma etc) to users. The air in rooms would have to have a lot of chemical residue in them. Even well ventilated ones.
My top choice is 0.5%hydrogen peroxide.
Bleach diluted dailey is second in well ventilated labs.
Subject: [DCHAS-L] National Science Teaching Association safety blog: “Safety Recommendations for Opening the New School Year"
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Subject: “Safety Recommendations for Opening the New School Year"
Date: June 20, 2020 at 10:45:41 AM GMT-4
This is the second commentary relative to addressing the COVID issues in K-12 schools titled “Safety
Recommendations for Opening the New School Year." It was just published last night by NSTA.... Check out the NSTA July Safety Blog Commentary by Dr. Ken. Contains critical
information that science and STEM teachers and supervisors/administrators need to address in planning use of lab this coming new school year:
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