A-Pinene 50ppb Nox 33 ppb

Fill completed, allowing 20 min for instruments to stabilise and measure background

Clean AMS measurement

11:00 Lights on

~ 11:07 nucleation started

52 MALO: very slow build up of number conc

100 MALO: number has not peaked yet, mass starting to come

2.25 HALO: CPC played up a bit

~ 3.5 HALO

4 HALO: I think the bag is not very clean.. Nucleation is about to stop..

Seeing some of the masses reported on Wed (bkgd) and Thursday!! 50amu difference

17:00 Lights off

After dilution

10 min later

Before dilution

After dilution