School officials desperate to calm worried parents bought these devices and others with a flood of federal funds, installing them in more than 2,000 schools across 44 states. They use a same technology deemed unproven.
As schools spend millions on air purifiers, experts warn of overblown claims and harm to children
Last summer, Global Plasma Solutions wanted to test whether the company s air-purifying devices could kill covid-19 virus particles but could find only a lab using a chamber the size of a shoebox for its trials. In the company-funded study, the virus was blasted with 27,000 ions per cubic centimeter.
In September, the company s founder incidentally mentioned that the devices being offered for sale actually deliver a lot less ion power 13 times less into a full-sized room.
The company nonetheless used the shoebox results over 99% viral reduction in marketing its device heavily to schools as something that could combat covid in classrooms far, far larger than a shoebox.
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