Author Topic: Gravity Samples  (Read 546 times)

Offline flbrewer

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Gravity Samples
« on: November 18, 2014, 01:00:59 PM »
I've noticed that my wine thief doesn't grab enough wort for a sample, normally I need to take 2-3 draws to fill the hydrometer test jar.

I've also noticed that if I shake the thief up and down, it gets enough wort. Would this add too much oxygen to the beer that it would be an issue?

Offline factory

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Re: Gravity Samples
« Reply #1 on: November 18, 2014, 01:07:45 PM »
I used to do shake the wine thief up and down to gather enough wort.  If there is any oxygen uptake, I've never noticed any oxidation from doing it.  I now have a conical fermenter with a ball valve at the bottom that I pull the sample from.  One could argue that I could get oxygen pick-up from that as well, but again, I've never noticed any oxidation off flavor or other ill effects from doing this.

Offline Jimmy K

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Re: Gravity Samples
« Reply #2 on: November 18, 2014, 02:19:50 PM »
I guess it depends on how vigorously you're shaking, but I stick my hydrometer inside the wine thief to take a measurement. Fill first, then drop the hydrometer in - there's always enough to float it though that would depend on your fermenter.
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Offline flbrewer

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Re: Gravity Samples
« Reply #3 on: November 18, 2014, 02:48:07 PM »
Hmmm, never thought about placing in in the thief.

Offline flbrewer

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Re: Gravity Samples
« Reply #4 on: November 18, 2014, 02:49:05 PM »
Yeah on second thought I don't think that would matter.

Offline Jimmy K

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Re: Gravity Samples
« Reply #5 on: November 18, 2014, 05:38:28 PM »
Yeah on second thought I don't think that would matter.
I guess it would only make a difference if your cylinder was much wider than your thief.
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Offline flbrewer

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Re: Gravity Samples
« Reply #6 on: November 18, 2014, 05:43:29 PM »
Exactly. They are essentially the same. Are there wide thieves available?