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My new meter arrived today. $25 USD
USB-C rechargeable. It also displays temp, and humidity, but we all already have that.
I intend to use this to do some inexpensive DIY CO2 making by fermentation, and to see if the popular CO2 bags actually do anything worthwhile.
My baseline reading here varies from 440-443 PPM.
To see if it is actually working, I blew into the sensor grating. Immediately the readings rose to 1,300+ These numbers seem consistent with online data.
I'm not so interested in total accuracy as I am in seeing the delta of various generating devices. This meter seems capable of showing the change if any.
https://www.amazon.com/dp/B09FPMBSNR
USB-C rechargeable. It also displays temp, and humidity, but we all already have that.
I intend to use this to do some inexpensive DIY CO2 making by fermentation, and to see if the popular CO2 bags actually do anything worthwhile.
My baseline reading here varies from 440-443 PPM.
To see if it is actually working, I blew into the sensor grating. Immediately the readings rose to 1,300+ These numbers seem consistent with online data.
I'm not so interested in total accuracy as I am in seeing the delta of various generating devices. This meter seems capable of showing the change if any.
https://www.amazon.com/dp/B09FPMBSNR