https://zeroes.ca/@CovidSafeScouts/113511523184790269 CovidSafeScouts@zeroes.ca - Need some hints in shopping for a quality, portable CO2 monitor? BreatheSafeAir has a rundown of several models of affordable and accurate CO2 monitors: https://forum.breathesafeair.com/t/best-affordable-co2-monitors/82/2

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