Re: Cleaning the gaggia
gaggiaboy....
Aluminium is VERY reactive and will even be attacked by water.....
Fortunately as soon as water (or even air) touches Aluminium it oxidises the surface forming a hard layer of aluminium oxide which resists further corrosion (Anodizing is just a chemically produced thicker layer).
Now when you introduce acid - any acid- it will dissolve the aluminium oxide (as well as the calcium carbonate - the scale)... no aluminium oxide.... no protection for the aluminium and rapid corrosion...
The acids action can be tolerated for a short time..... but long term it will do damage.
gaggiaboy....
Aluminium is VERY reactive and will even be attacked by water.....
Fortunately as soon as water (or even air) touches Aluminium it oxidises the surface forming a hard layer of aluminium oxide which resists further corrosion (Anodizing is just a chemically produced thicker layer).
Now when you introduce acid - any acid- it will dissolve the aluminium oxide (as well as the calcium carbonate - the scale)... no aluminium oxide.... no protection for the aluminium and rapid corrosion...
The acids action can be tolerated for a short time..... but long term it will do damage.


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