I’ve had quite a few requests, so I figured I’d post something to let people know it’s finally done.
Any help with error checking and such would be appreciated. Cheers!
I’ve had quite a few requests, so I figured I’d post something to let people know it’s finally done.
Any help with error checking and such would be appreciated. Cheers!
Awesome! Thanks, I’ve found your spreadsheet to be very accurate so far.
Thanks for the spreadsheet- it definetely helps sort out a bunch of confusion I am having with this instrument. Can someone explain why a refractometer if only good for pre-fermentation readings. I did not see instructions for only using the refractometer pre fermentation, but now I do notice the “SG wort” label under the specific gravities. Does yeast in suspension bend light that much to throw off the FG readings?
It’s because alcohol has a different SG than water, which throws off a direct reading.
Denny means the the alcohol has a different refractive index than both water and dissolved sugar, which throws off a direct reading.
If plain water is set to zero (by calibrating the refractometer) you could read a mixture of water with either alcohol or sugar. But in a mixture of all three you can’t tell how much refraction is from alcohol and how much is from sugar. If you have a base reading before fermentation then you can use an equation to determine alcohol content, but in general a hydrometer is easier and more accurate. Sean’s spreadsheet is very good, most of the others are off significantly in practice.
Yeah, that’s what I meant! First day off the painkillers, but my mind still isn’t working right.