OVA result = 0.1 ppm.  What does this really mean?

OVA result = 0.1 ppm. What does this really mean?

OVA Readings….not much better than your own nose I’ve used a bunch of organic vapor analyzers (OVAs) over my 25-year career in environmental consulting work.  From ancient flame-ionization detectors made by Foxboro to photo-ionization detectors made by...