ljm
Member
Since SG & Plato are often used in tandem for calculations (e.g. dH2O(20C)*SG(20/20)*Plato = w extract), it is understandable that most homebrewers use either a SG hydrometer and calculate Plato (my current method) or use a dual scale SG/Brix=Plato hydrometer - although I don't particularly trust the dual or triple scales. When taking SG readings, rather than do the fiddling required to cool samples all the way to 20C I just use a "standard" formula to correct the reading.
Now, suppose I could get a good deal on a precision Plato or Brix hydrometer and want to calculate SG. That I can do but first I need Plato at 20C.
Is there a "standard" temperature correction for the Plato scale measured with a hydrometer? If the sample was cooled to less than 30C (for example), would Plato linearly track the density of water down to 20C?
Thanks for any and all suggestions.
Now, suppose I could get a good deal on a precision Plato or Brix hydrometer and want to calculate SG. That I can do but first I need Plato at 20C.
Is there a "standard" temperature correction for the Plato scale measured with a hydrometer? If the sample was cooled to less than 30C (for example), would Plato linearly track the density of water down to 20C?
Thanks for any and all suggestions.