Don't worry about the green mate, this occurs inside every still towards the end of a run.
The lower plates will tend to build up a black build up, you may have noticed this, depending on what you're distilling and how close the first plate is to your pot.
I used to rotate the plates before finally pulling them all down for manually cleaning.
As @smaug said, I cleaned with a vinegar solution.
I lacked the means back then to recirculate the acid in situ, otherwise I would never have gone to the trouble of pulling my column down for regular cleaning.
Comments
Basic lemon juice would have the same effect on copper in any humid environment. What cleaning solution? And did you air dry?
I wouldn't read too much into that. It's 99% red copper btw.
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Don't worry about the green mate, this occurs inside every still towards the end of a run.
The lower plates will tend to build up a black build up, you may have noticed this, depending on what you're distilling and how close the first plate is to your pot.
I used to rotate the plates before finally pulling them all down for manually cleaning.
As @smaug said, I cleaned with a vinegar solution.
I lacked the means back then to recirculate the acid in situ, otherwise I would never have gone to the trouble of pulling my column down for regular cleaning.