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by tdrdt
1658 days ago
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The brand is Simr, but I think there are only 3 or 4 meters that are sold as whitelabel and rebranded a thousand times.
I think it was around $30. Outside it measures around 400ppm so the base point is good. Inside it measures 480ppm with good ventilation. When someone farts it goes to 2000ppm for a while. So I think it measures 'alright'. |
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