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CletusDwight wrote:Measuring the temperature at the point where the vapour begins to condense tells you exactly what the vapour composition is. (There's a 'Distillation Temperature and Concentration Relationship' graph on the parent site - theory section I think.)
Until you can tell by taste, the composition is a good guide to where to make your 'cuts'. And when to stop collecting tails and turn off the still.
kook04 wrote: maybe cuts are the biggest learning curve, here.
CletusDwight wrote:I use a thermometer in my still head because it warns me when things are coming up to temperature at the start and tells me what the current abv is during the run more accurately than a hydrometer.
As I understood it there is a direct relationship between the abv you're pulling off and the temp?
theholymackerel wrote:What makes ya think a tool designed to measure temp will give a more accurate measure of ABV% than a tool specifically designed to measure abv%?
theholymackerel wrote:So what useful info are ya gettin' from yer thermometer that makes the hole in the boiler worth it?
That means that the measurement you take is an average over however long it took to collect that amount. Especially at the start and end of a run, the composition changes rapidly and a thermometer is a better spot measurement.
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