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Final gravity reading difference between hydrometer & Refractometer

  • Dave Harry
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6 years 4 months ago #2905 by Dave Harry
Final gravity reading difference between hydrometer & Refractometer was created by Dave Harry
Hello Gash and fellow forum members,

I have done a couple of all grain brews with the first one going okay. Now about to bottle my second AG brew and there is a difference between hydrometer and refractometer on my final gravity on a pale ale. The Brew has been in the fermenter for two weeks and two hydrometer readings in successive days were both 1.009. I just bought a refractometer and followed the calibration steps now the refractometer reading is 1.020. Any thoughts, ideas on this please.

Thanks
Cheers
Dave

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6 years 4 months ago #2906 by Gash
Replied by Gash on topic Final gravity reading difference between hydrometer & Refractometer
G'day mate, refractometers are perfect for brewing before the ferment, but after alcohol is present they read differently, there are calculators around that can estimate what your reading is.
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6 years 4 months ago #2907 by Gash
Replied by Gash on topic Final gravity reading difference between hydrometer & Refractometer


So the first number is your SG/OG starting gravity, I guessed this here, then you put in your reading 1.020 = 5.08 brix, this calculator says its 1.009 which matches what your hydro said.

the second calculator here.
www.brewersfriend.com/refractometer-calculator/

Cheers mate!
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6 years 4 months ago #2908 by Dave Harry
Replied by Dave Harry on topic Final gravity reading difference between hydrometer & Refractometer
Cheers for that Gash. Yeah I realised after I asked the question and had done some more research that the adjusted number is pretty much spot on for my final gravity so that's all good. Still learning the ropes but enjoying it.

Thanks!
Dave

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