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Old 03-20-2013, 12:16 PM   #1
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Default Using refractometer for checking fermentation

I was curious if you can use a refractometer to check whether fermentation had finished? I understand that alcohol present messes with the readings, but does it mess with them consistently? Can I take three readings, one each day and it will come back with the same Brix reading every time, thus telling me fermentation has stopped or will the alcohol cause it to have different readings.

If this works it seems like a much easier way of testing than using two hydrometer readings.

Thanks


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Old 03-20-2013, 12:17 PM   #2
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Yep, that works fine.


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Old 03-20-2013, 12:19 PM   #3
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Just be sure to take you OG reading!

Use BeerSmith or iBrewMaster to record the readings.

I use this website also:
http://www.brewersfriend.com/brix-converter/
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Old 03-20-2013, 12:31 PM   #4
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Quote:
Originally Posted by philber View Post
I'm an idiot!

The site to use is:
http://onebeer.net/refractometer.shtml

The other one is good too...
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Old 03-20-2013, 11:07 PM   #5
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Philber, thanks for the links but I think there might be a misunderstanding. I don't want to use the refractometer for figuring out my final gravity, I want to use it to see if fermentation has stopped.

So instead of sanitizing a turkey baster, hydrometer, and hydrometer stand twice or lose a beer and a half, I can just sanitize a pipet. Much less risk of an infection since beer isn't being put back in, and less beer wasted.

Thanks though for the links
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Old 03-21-2013, 12:20 AM   #6
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Don't need a pipette (unless you're an equipment junkie like me), sanitize a straw!
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Old 03-21-2013, 12:38 AM   #7
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Good idea to save beer. Pulling out a shot glass worth for tasting and checking with refractometer is what I'll do in the future for interim measurements. I'll do one final hydrometer reading at the end of fermentation.
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Old 03-21-2013, 03:53 AM   #8
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Cyclman,
I just have a pipet from the refractometer. I am not that cool.


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