Hydrometer offset feature

Discussion in 'Brew Sessions' started by dholt, Oct 14, 2018.

  1. dholt

    dholt New Member

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    #1 dholt, Oct 14, 2018
    Last edited: Oct 14, 2018
    I need a sanity check; my hydrometer reads 1.004 in water, should I be using 0.004 or -0.004 as the offset? I've always used -0.004 to subtract back to 0.000 but my numbers seem low...
     
  2. N0mad

    N0mad Well-Known Member

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    Are you using distilled water??? it's very important that you do...
     
  3. Trialben

    Trialben Well-Known Member

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    And at calibration temp usually 20c
    Yep subtract 4 points
     
  4. dholt

    dholt New Member

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    Yeah, distilled water at ~68F, though our tap water here doesn't have much in it so it also reads 1.004. Thanks for the confirmation
     
  5. Hawkbox

    Hawkbox Well-Known Member

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    Yeah so a 1.050 in wort you would read 1.046. Assuming the water is clear.
     

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