Use any pre-infusion duration that you choose with your LONDINIUM I

a pull of the lever after the shot to release 50-60mL guarantees the thermosiphon immediately recommences and you will observe exceptional thermal stability with whatever temperature measurement device you choose to use to verify this

most espresso machine users (pump or lever) habitually pull 50-60mL through the group post shot to rinse the shower screen anyway, so it is a complete non issue

always has been, always will be: the design of the LONDINIUM I as far as espresso extraction goes remains unchanged since the very first LONDINIUM I we built, and we have no plans to change it. it just works

almost 600 LONDINIUM I owners spread across 40 countries in two and a half years

somewhat annoyingly LONDINIUM I is the best selling single group commercial lever machine in the world

upgrade to the simplicity of LONDINIUM today