This is an indoor air quality investigation conducted by Building Science Corporation in response...
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Supco IAQ50 Wall Mounted Indoor Air Quality Monitor, 0 to 2000 ppm, 1 ppm Resolution, +/-50 ppm Accuracy

List Price:$199.93
Price: $172.74
You Save: $27.19 (14%)
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Indoor Air Quality Meter - 800046 by Sper Scientific

Price: $346.50

Allergies indoors. How to measure indoor air quality? Is there any instrument that can do that?
I am always getting stuffed nose and headaches indoors. My house of ill repute is a newly constructed house. I am suspecting some gas is generated...
Andy: If you requisite just a straight particle count, you can search the web for scintilla counters. Expect to pay in the neighborhood of $150 to $200 US. If you think it likely mold, radon...