Do the after bottling Hydrometer readings mean anything? - Home Brew Forums

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Old 01-30-2008, 02:32 AM   #1
cdnjan
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Just curious I suppose as this is my first batch. It went from about 1.012 back up to 1.030 so well i was suprised. Perhaps irrelevant?

It tastes great ... not real fizzy but definately carbonated ... its a few days early.

tia
jan

 
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Old 01-30-2008, 02:40 AM   #2
Yuri_Rage
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You have created one or more of the following conditions:

You set yourself up for bottle bombs.
You didn't mix your priming sugar very well.
You added too much priming sugar.
and/or
You need lessons in hydrometer reading.

The following will help you (and us) figure out what happened:

How much priming sugar did you add?
How did you add the priming sugar?
Are you correcting your hydrometer readings for temperature?

Priming sugar should only increase the SG by 0.002 to 0.003.
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Old 01-30-2008, 03:01 AM   #4
cdnjan
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ohoh and here i thought it was great!
I used 3/4 cup of the sugar as suggested for ales
I dissolved the sugar in 2 cups of boiling water then mixed into the batch slowly.

I did take the reading at fridge temp <<< so no I did not correct it.

I will try again tomorrow on a room temp bottle.

I think I am fine with reading the hydrometer everything else seemed to go like clockwork.

I will post tomorrows results I just hate to drink a warm one but if the readings are relevant I want to make sure I get it right next time around.

 
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Old 01-30-2008, 03:04 AM   #5
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Quote:
Originally Posted by Brewtopia
You have to de-gas the beer. I would imagine that what C02 is in solution is causing the hydrometer to sit higher in the liquid.
I don't think that's the case, 'topia. I've never heard that before, and I just tested it myself with a fully carbonated beer. The hydrometer reading was 1.010, just as you'd expect for an FG with a light bodied beer like I poured.
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Old 01-30-2008, 03:10 AM   #6
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Quote:
Originally Posted by cdnjan
I did take the reading at fridge temp <<< so no I did not correct it.
Assuming the FG of your beer was 1.012, and you have a hydrometer calibrated to 60 F, the reading at a "fridge temp" of 40 F would be 1.013. I'd say temperature correction is not your problem.

The most likely situation is that your priming sugar is unevenly mixed, and you will have an unevenly carbonated batch. An increase of 0.018 points at bottling will DEFINITELY create a bottle bomb, and I think you are at risk for a few of those. Put your bottled beer in a Rubbermaid tub with a lid, and treat it very carefully until you sort this out.
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Old 01-30-2008, 03:11 AM   #7
rollinred
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Quote:
Originally Posted by Brewtopia
You have to de-gas the beer. I would imagine that what C02 is in solution is causing the hydrometer to sit higher in the liquid.
Actually co2 is a gas which is a lot lighter than the beer. Which would cause it to sit lower in the brew and obviously give you a lower hydro reading.

And also if you are reading it at fridge temps I believe you found your culprit. Colder liquid is more dense and causing it to sit higher. Try keeping one of those brews and pouring it at 65 degrees or whatever your hydrometer is rated for. I bet it gets you quite a bit closer, then if you want just cool you sample back down in the fridge and drink it later.

 
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Old 01-30-2008, 03:59 AM   #8
malkore
 
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I have a question: why are you taking hydrometer readings after bottling?
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Old 01-30-2008, 10:27 AM   #9
cronxitawney
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Quote:
Originally Posted by malkore
I have a question: why are you taking hydrometer readings after bottling?
I was thinking the same thing

 
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Old 01-30-2008, 01:08 PM   #10
Dextersmom
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my question thats been bugging me for a while is how does one take hydrometer reading from the carboys without disturbing anything? i'm assuming you take a reading towards the end of the fermenting process but what if your reading tells you that the FG is still too high and needs more time in the fermenter? obviously you don't want to rack the beer out to only have to rack it back in and increase the chance of contamination.

How do you guys steal enough beer from the fermenters to get a reading?

 
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