Air Flow peak flow meter

Just started to use this cute little blue number. Note that it is recording 40l/m less than old Mini Wright. Any other experience of this?

[Hidden]

Hi Malvina,

I have found this too! I asked my asthma nurse but she wasn't sure so we did a 'test' where I blew into a mini wright Peak flow meter & then into the Air Flow peak flow meter to compare the results. I could still blow my usual score on mini wright (550), it seems to read a lower score (500).

Not sure why tho.

Hope that makes sense!?

Claireb