I live in western North Dakota I am very concerned about VOCs and HAPs in the air as ND and EPA are rightly limited in their protection of civilians After hours of research I decided me for Huma-i (HI-150) . Why? It detects VOCs, carbon dioxide, particulate matter (2.5 and 10) and humidity. Now I need to buy another air quality meter to compare the results with Huma-i. I haven't done that yet. What I did: I set a few baselines, for example, I checked the air quality at several preschools, a nursing home, and a clinic to see if the daycare oh my preschool had "good" air. the main problem when you do research. I am currently using my data to motivate the kindergarten to make changes. Here's the key: you need to create baselines with this tool to get a picture of the air quality in a given location. We recently took Huma-i to a hotel. Our room had dangerous levels of volatile organic compounds and carbon dioxide. We turned on the AC and opened the window - the level dropped to "safe" within minutes. As for the quality of the outside air. North Dakota is difficult to assess. Why? Wind. Our state's winds carry pollution, so despite oil activity, ground-level ozone is still rated good to excellent. Huma-i has never registered any dangerous VOC levels outdoors. Solids rise from time to time (controlled solids), especially around diesel trucks. After all, Huma-i relieved a lot of stress, but also caused a lot of stress. I have every reason to believe the readings are correct ------- Remember I took several baselines to get comparison results. I can say with certainty that in one kindergarten the air is worse than in another. Without the original data I would still trust Huma-i but it is recommended to use another air quality meter to compare the results. Why? If you do your research, many handheld air quality monitors get negative reviews due to "accuracy issues." I recommend Huma-i (HI-150), but be prepared to run into some pollution issues that may force you to make big decisions. like the need to change kindergarten. I'm not an air pollution expert. However, I have several degrees in research, including history and education. I've spent hours studying indoor and outdoor air pollution.
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