WissahickonBrew
Well-Known Member
Does anyone know of a source for calibration solutions (other than distilled water) for checking refractometer accuracy?
Thanks!
Thanks!
Are you looking for a series of solutions to test a range of values as opposed to just calibrating to 0 with distilled H2O? Sounds like you don't trust it?
EXACTLY!
My refractometer does not agree with my hydrometer!
You can make up sucrose solutions by weight that have a defined Brix density. As long as you also know the temperature, you can look up the SG.
BTW, my friend and I found a case of Busch hidden in Wissahickon Creek. I tasted one and found it disgusting, so we shook up the cans and smashed the against a bridge. I was 12 years old and it was 1984.
If that was your stash, I'm really sorry, man.
1 lb table sugar made up to 1 gallon will give you 1.046. 1 lb made up to half gallon will get you 1.092. Make them up as best as you can and see which is more accurate.
EXACTLY!
My refractometer does not agree with my hydrometer!
Is the refractometer not agreeing with the hydrometer when you measure gravity after fermentation, or before?
You don't have to mix up that much. Bust out a scale weigh out some sugar, 10 grams for instance, now weigh out some distilled water, 90 grams. Divide the sugar weight by the total weight. When you dissolve it you have a solution that is 10 brix or whatever percentage of sugar to total weight is the brix value. Mix up a few if those in different amounts.
My refractometer reads 3% low and my hydrometer 6% high
Humor me on this!
According to this method the amount of sugar in solution is a % of weight of the total solution. I thought hydrometers & refractometers were measuring the % of sugar by volume (a function of solution density?).
Am I way off?
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