Author Topic: Second opinion on hydrometer reading  (Read 1144 times)

Offline Bevilaquafoto

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Second opinion on hydrometer reading
« on: March 17, 2015, 09:36:40 PM »
I am trying to refine my hydrometer readings, and have posted here before. Would someone be willing to back me up on this reading? Am I correct in reading this as 1.074? The meniscus seems to be at 1.072. I just finished brewing this Belgian golden ale. Starting gravity was supposed to be 1.070 according to the recipe. The reading that I am getting is at 68 degrees. http://t.co/sXlEEKwz2P
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Offline a10t2

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Re: Second opinion on hydrometer reading
« Reply #1 on: March 17, 2015, 09:51:28 PM »
It could be either, depending on whether the hydrometer is calibrated to the top or bottom of the meniscus.
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Offline Bevilaquafoto

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Re: Second opinion on hydrometer reading
« Reply #2 on: March 17, 2015, 10:07:31 PM »
At 60 degrees, it's calibrated for the bottom.It looks to me like the difference between the bottom and the top of the meniscus is two lines? Maybe just one? It's REALLY hard to see this thing!
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Offline flbrewer

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Re: Second opinion on hydrometer reading
« Reply #3 on: March 17, 2015, 11:03:41 PM »
Just came to say, I really like your photographs! Good luck in your homebrewing and welcome.

Offline dzlater

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Re: Second opinion on hydrometer reading
« Reply #4 on: March 17, 2015, 11:04:04 PM »
Split the difference 1.073
That's what it looks like to me.
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Offline Bevilaquafoto

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Re: Second opinion on hydrometer reading
« Reply #5 on: March 17, 2015, 11:16:58 PM »
Thank you so much, Flbrewer!That's what I thought. Thanks, dzlator.
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Offline Stevie

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Re: Second opinion on hydrometer reading
« Reply #6 on: March 18, 2015, 12:52:47 AM »
Yeah, 1.073

Offline Bevilaquafoto

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Re: Second opinion on hydrometer reading
« Reply #7 on: March 18, 2015, 01:01:26 AM »
According to the recipe, I'm supposed to land at 1.070.  Does 1.073 make sense at 68 degrees? Am I overthinking all this?


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Offline Stevie

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Re: Second opinion on hydrometer reading
« Reply #8 on: March 18, 2015, 01:23:32 AM »
If calibrated for 60°, our OG is 1.074. If it was an extract batch, your volumes might be a bit off, or the recipe is off. If it is an all-grain batch, you may have extracted more sugars than expected.

Offline ynotbrusum

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Re: Second opinion on hydrometer reading
« Reply #9 on: March 18, 2015, 03:37:59 AM »
I don't know ,but 2 points is not a huge margin.  I would say that is 1.074, but I read from the bottom of the meniscus typically.  Can't really get that tight...put it on a refractometer and average 3 samples...that should get you pretty close.
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Offline brewinhard

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Re: Second opinion on hydrometer reading
« Reply #10 on: March 18, 2015, 10:38:24 PM »
I would call it 1.074 providing your hydrometer is calibrated for 68 degrees.   

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Re: Second opinion on hydrometer reading
« Reply #11 on: March 19, 2015, 08:38:31 PM »
i vote 1.073 adjusted to 1.074 (68F corrected for 60F). but honestly, no big deal either way you call  t.
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Offline Bevilaquafoto

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Re: Second opinion on hydrometer reading
« Reply #12 on: March 19, 2015, 08:40:04 PM »
Thank you all. I think the take-away is that I am reading it more or less correctly and am in the ballpark of my recipe. This is helpful.


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Offline flbrewer

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Re: Second opinion on hydrometer reading
« Reply #13 on: March 19, 2015, 08:58:23 PM »
Consider that if it were truly 1.074 and pretend your FG was 1.020...this would be a 7.09% beer. If the OG truly was 1.072, you'd end up with 6.83% ABV.

Doesn't really matter for our purposes, commercial brewery is a different story. Tell your friends it's 7%.

Offline HoosierBrew

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Re: Second opinion on hydrometer reading
« Reply #14 on: March 19, 2015, 09:20:32 PM »
i vote 1.073 adjusted to 1.074 (68F corrected for 60F). but honestly, no big deal either way you call  t.

+1
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