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Author Topic: Hydrometer calibration  (Read 2722 times)

Offline sdixon

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Hydrometer calibration
« on: February 22, 2012, 07:50:25 PM »
How many of you check your hydrometer calibration? I have 4 and I just checked them and on the same sample they were:

1. 1.040
2. 1.038
3. 1.036
4. 1.034

Being off by 6 points is a lot, mai no?
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Offline Chris Craig

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Re: Hydrometer calibration
« Reply #1 on: February 23, 2012, 08:02:13 AM »
I've been liking my refractometer.  I think I paid $30 shipped on eBay for one with automatic temperature correction.
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Offline Kyle

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Re: Hydrometer calibration
« Reply #2 on: February 23, 2012, 08:45:41 AM »
I had one hydrometer that was giving unexpected ratings, and then I noticed the paper sleeve on the inside had slipped down the glass tube about 3/8 of an inch. Replacing it and testing against a third one for accuracy was the solution.
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Offline Richard

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Re: Hydrometer calibration
« Reply #3 on: February 23, 2012, 10:10:42 AM »
sdixon: out of interest was the sample at room temperature to start? those numbers look like a liquid cooling down...
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Offline Jake

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Re: Hydrometer calibration
« Reply #4 on: February 23, 2012, 07:49:22 PM »
I knew I wasn't a shitty brewer ... must be the hydrometer. Damn hydrometer!!!
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Offline JohnQ

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Re: Hydrometer calibration
« Reply #5 on: February 23, 2012, 07:58:44 PM »
Quote from: "Jake"
I knew I wasn't a shitty brewer ...


Yeah, Right.
Pour me another of those shitty beers, ok.
JQ
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Offline sdixon

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Re: Hydrometer calibration
« Reply #6 on: February 23, 2012, 11:13:49 PM »
Richard - Yes, samples were at room temp. Also, when I tested all 4 hydrometers in H2O, they were all spot on!? In an ideal situation I would have several samples at various SG  throughout to test...
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