You are reading a single comment by @gbj_tester and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
gbj_tester
Just asked and apparently it's only measuring CO2, so hopefully that is less of a problem.
As an aside the baseline concentration of CO2 in our garden is around 417ppm!
@Pifko that would be ace, just as an experiment - will pm.