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Interesting CO test results.... running generator in closed 2 car garage.
Preliminary Test results are : Post 73 onwards of https://www.smokstak.com/forum/showthread.php?t=182629&page=8
200 ppm in 5 minutes
600 ppm in 20 minutes
700 ppm in 30 minutes
980 ppm in 37 minutes
I'm a bit surprised it took that long to rise.
Johnny C is running another test over weekend, and adding a test video.
Too bad these home CO detectors top out at ~999 ppm