I've obtained a simple air quality analyzer which measures several items, formaldehyde concentration among them. While I cannot vouch for its correctness, I found the values measured during the last few days worth asking about.
Wherever I go, the analyzer measures higher than ideal levels of formaldehyde. From reading a bunch of papers, I concluded that the "safe" value is around 0.1 mg/m3. However, I can only measure so little on fresh air, outside, where it is around 0.04 - 0.08 mg/m3.
Indoor locations include:
- At my folks' place which has not been recently renovated or painted, has no new furniture and the levels are around 0.180-0.280 mg/m3.
- In my apartment which has some newer furniture and has been painted a couple of years ago, levels are from 0.250-0.450 mg/m3. I do open windows often and try to vent but the levels easily spike over 0.1 mg/m3.
- At my office, which is not renovated, has no new furniture and has a lot of air, always above 0.150 mg/m3.
There is no smoking at any of these locations.
From what I read, this values are in line with furniture factories. I'm a little bit confused and worried, because I'm not sure what to make of this. Are there ways to reduce the concentration of indoor formaldehyde? Might it make sense to get a second analyzer to corroborate the results?
Background: I'm an electrical engineer and not too much into advanced chemistry or health & safety. I've spent some time looking through papers and publications, but a lot of them are about WHS and not easily understandable by me, quoting different methodologies or abbreviations I can hardly pick up.