Build a Temperature Controlled Vaccine and Insulin Cooler: A Humanitarian Maker Project by David Hartkop
August 3, 2019 - Comment
An instructional manual giving step-by-step illustrated instructions for creating a digitally controlled cooler powered by dry ice. This cooler is designed to operate for up to ten day with no additional power source, and to keep 5 gallons of cargo chilled to precisely 5˚C.
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