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Showing results for tags 'obscuration'.
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I am looking for a better way to adjust proof in liqueurs. By better, I mean better than add water, re-distill sample for obscuration, repeat, etc. I'm not that smart, so an example would be great. We proof our basic spirits with hydrometers, by weight, Can someone walk me through the correct way to take a small sample and figure out how much water to add to bring it down to a specific proof? I understand that we would still need to re-distill the end product to ensure it is, indeed, the correct proof. Thanks, Todd
When determining proof when a spirit has in excess of 400 mg/l obscuration are you required to follow this method or can you simply distill and proof using a lab still? Video referenced is determining proof obscuration by evaporation. Thanks,
Has anyone used Pellet Lab Master Distillers 1000ml Distillation Kit? Were you happy with it? How did you get your lab equipment for determining obscuration, piecemeal? Is the process of obscuration proofing demonstrated in the TTB video on proofing as challenging as it seemed to me? I'd appreciate knowing more from those of you who do obscuration proofing with ease! Also, I mistakenly posted this in Equipment, so you might see another version.
I'm starting with 80 proof spirit, adding sugar and other flavors. to test the true proof i'm planning to use a small lab still. when looking at the gauging manual it says: © Distillation method. Determine the apparent proof and temperature of the sample of spirits and then distill a carefully measured sample in a small laboratory still, and collect a quantity of the distillate, 1 or 2 milliliters less than the original sample. The distillate is adjusted to the original temperature and restored to the original volume by addition of distilled water. The proof of the restored distillate is then determined by use of a precision hydrometer and thermometer in accordance with the provisions of §13.23 to the nearest 0.1 degree of proof. The difference between the proof so determined and the apparent proof of the undistilled sample is the obscuration; so if i start with 300 ml in the still i would collect 298 ml and adjust temperature, and add water to original quantity? it seems like it would be hard to leave only 1-2 ml in the still. Thanks for any help, Brad