Wood stove in a room: measuring air quality every 30 minutes

Using a sensitive meter I measured the levels of PM 2.5 in my open-plan room. Measurements were taken every half hour from 11am to 8pm. The stove was lit at pm.

No stove lit (11am to 17.12pm)

11.16

007

11.26

037

Experiment: I lit one match and let it burn almost to finger. I stood 2 metres from the meter.

11.48

007

Levels returned to 007 about ten minutes later.

13.10

107

Wife gently cooked an omelette (did not burn it).

13.21 | 13.53 | 14.23

90 > 55 > 37

It took one hour and 13 minutes for the PM2.5 levels (caused by the wife cooking an omelette ;-) to drop from 107 to 37

14.53 | 15.25

026 > 019

And another hour to drop from 37 to 19

Stove lit 17.12pm to 21.00pm

17.12 | 17.18

011 > 016

Prior to lighting reading is 011.

17.22 | 17.24

016 > 017

Why did lighting a match not cause a raise as it did in the morning? Because I lit the match just inside the stove door and the draw of the chimney sucked away any smoke or smell from the match.

17.29

016

A couple of minutes after opening the door, prodding the logs to rearrange, and adding a new log.

17.39

014

18.01

010

18.16

008

Rest of evening settles around 008.