![]() The hydrometer will read 1.000 for pure water if it is perfectly calibrated. Tables for precision hydrometers (0.990 1.020 SG) and regular range hydrometers are available. Place the hydrometer in the water, spin gently to shake off air bubbles, and wait for it to settle. Commercial breweries use more exact conversion formulas, and conduct their own tests to calibrate the Brix scale based on various factors. 6 Carbonation calulator Hydrometer/Refractometer correction Hydrometer conversion tables This is a set of tables that you can use to convert and temperature correct a hydrometer or refractometer reading. The Balling and Brix scales measure the sugar concentration in a solution, but the units are close enough to the Plato scale that you can use them interchangeably for home brewing.(The further you get from this number, the less accurate the conversion is. For example, a 10 degrees Plato wort has a specific gravity of 10 x. Unfortunately, the further away from the calibration point you are, the less accurate your reading will be. On brew day, you may want to measure a sample of wort without waiting for it to cool all the way to the calibration temperature of your hydrometer. Multiply the Plato measurement by 0.004 and add 1 for a specific gravity estimate that's close enough for homebrewing purposes. Most modern hydrometers are calibrated to around room temperature, or 68 degrees (F). The Plato scale measures the percentage of sucrose in a wort, so 10 degrees on the Plato scale means 10% of the wort is sucrose by weight.Here's how to measure density using these three units: Your hydrometer may use one of these scales instead, or you may need to convert your measurement to follow a certain recipe. ![]() Interpret the Plato, Balling, or Brix scales.
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