by Grainfather
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The refractometer only requires a tiny sample of your brewing wort to measure the SG and Brix %

This is a great tool to more conveniently measure your SG or Brix % when using your Grainfather. When using a hydrometer, you need to get a trial jar sample of wort from your Grainfather when it is near boiling and then wait for the wort to cool before getting a reading. With the refractometer you only need to take a small sample using a spoon or pipette straight from the Grainfather and only wait a few seconds before dropping a very small sample on to your refractometer.

Check out the below to find our more about the benefits of using a refractometer when grain brewing: