So made 2 batches of TFFV,
only thing I did differently to the other batches I have made was add eggshells to try and keep the PH from crashing to see if I could ferment out further than the .992-.995 I normally get.
It didn't.
and when I run them the fores and first few bottles have a slight green tinge to it.
cleaned the still, still had the green tinge.
ran a different wash and no green tinge.
I'm wondering if its the ph reacting with the copper when its turning from a vapour to liquid in the PC?
the wash is clear in the bubbler column and the reflux from the scrubbers above is clear. but when it comes out of the still its got a green tinge. It lasts for about the first 2L collected from a 46L wash.