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I have a Reflux 5" Dash with 6 pro plates and a 200 lt boiler. I have run it numerous times now, and I am only focusing on producing neutral spirit, using a TPW. Now that I am slowly getting my head around how to run the still and fine tune it, I find I am only managing to get 90% once I've taken off the fores and heads. I've played around with different settings and can see that by cranking up the output, the purity starts to drop, but nothing I've tried results in getting higher than 90%.
So my questions are: with my current set-up, is there anything else I can, or should be doing to increase the purity up towards the 93% mark? And if the answer to that is 'not really', what would be recommended in terms of increasing the purity from a single spirit run, i.e., more bubble plates, packed column etc. (I have a five metre high roof above the still so there are no height restrictions.)
I guess the other question I have is: If I am only wanting a neutral spirit to make liqueurs, would I even notice the difference between a 88% verses a 92% neutral, given that it will be proofed down to 25% abv and have a heap of flavours and sugar added anyway. That being said, I can see myself one day branching out into the world of gins and rums, so upgrading the equipment will be on the cards anyway.
Many thanks for any thoughts or advice.