Assertion: formaldehyde | /r/HasProperty | 0.03-0.09 ppm
Facets:
Source sentences:
text: (2015) compared 46 workers exposed to low levels of formaldehyde (0.03-0.09 ppm, 8 h TWA, measured in 7 sectors of the working area) to 45 referents (mean exposure 0.012 ppm).