I've got a Dylos DC1100 Pro and it seems to work great, however I don't have a solid way of verifying the accuracy of its measurements. Supposedly it's one of t

I've got a Dylos DC1100 Pro and it seems to work great, however I don't have a solid way of verifying the accuracy of its measurements. Supposedly it's one of the most accurate devices available at that price. Empirically it works; running a HEPA filter in a closed room for 15 minutes will eliminate almost all particle readings. Cooking bacon in the kitchen will make the meter read 100x higher than normal, etc. I'd recommend buying one if you're interested in monitoring air quality, if anything it will be useful in giving relative quality measurements.