Author Topic: Low Volume Hydrometer - Any Ideas?  (Read 3159 times)

Offline Philbrew

  • Brewmaster
  • *****
  • Posts: 867
Re: Low Volume Hydrometer - Any Ideas?
« Reply #15 on: June 30, 2015, 08:47:36 PM »
Slightly off topic.  Is the wort correction factor in Sean's calculator the wort's OG ?

No, it's the refractometer reading divided by hydrometer reading for your typical wort.
OK, let me see if I got it.  It's the refractometer reading (in gravity) divided by hydrometer reading (in gravity) of a typical wort before fermentation.  My refractometer reads in brix so I'll have to do some conversion.
Many of us would be on a strict liquid diet if it weren't for pretzels.

Offline a10t2

  • Official Poobah of No Life.
  • *
  • Posts: 4695
  • Ask me why I don't like Chico!
    • SeanTerrill.com
Re: Low Volume Hydrometer - Any Ideas?
« Reply #16 on: June 30, 2015, 09:42:44 PM »
Right, except convert the hydrometer reading to ┬░Brix so that you can divide the numbers directly. (Or convert to "points" if that's more comfortable.)
Sent from my Microsoft Bob

Beer is like porn. You can buy it, but it's more fun to make your own.
Refractometer Calculator | Batch Sparging Calculator | Two Mile Brewing Co.

Offline brewinhard

  • Official Poobah of No Life.
  • *
  • Posts: 3272
Re: Low Volume Hydrometer - Any Ideas?
« Reply #17 on: June 30, 2015, 10:23:10 PM »
If, for whatever reason, you need to take that many samples, you could use a clear plastic wine thief to take the sample, then once you've made your reading, release the sample back into the fermenter (gently, so as to not introduce oxygen). http://www.northernbrewer.com/shop/winemaking/wine-equipment/fermtech-wine-thief

That may be effective providing you sanitize the hydrometer, otherwise you are risking infections.  Also sounds like a recipe for oxidation even if being careful. 

Offline Stevie

  • Official Poobah of No Life.
  • *
  • Posts: 6858
Re: Low Volume Hydrometer - Any Ideas?
« Reply #18 on: June 30, 2015, 11:02:46 PM »
If, for whatever reason, you need to take that many samples, you could use a clear plastic wine thief to take the sample, then once you've made your reading, release the sample back into the fermenter (gently, so as to not introduce oxygen). http://www.northernbrewer.com/shop/winemaking/wine-equipment/fermtech-wine-thief

That may be effective providing you sanitize the hydrometer, otherwise you are risking infections.  Also sounds like a recipe for oxidation even if being careful.
Yeah, I would avoid this idea myself.

Derek

  • Guest
Re: Low Volume Hydrometer - Any Ideas?
« Reply #19 on: June 30, 2015, 11:34:56 PM »
I've just been factoring in 3-4 samples into my volume when calculating the recipe. This seems to work out fine. I just use my desired ending volume + a few hydrometer samples as my final volume.

Offline bengelbrau

  • Assistant Brewer
  • ***
  • Posts: 146
Re: Low Volume Hydrometer - Any Ideas?
« Reply #20 on: July 01, 2015, 01:00:20 AM »
A question to ask yourself is whether you really need to know the FG. I have given up on that reading as irrelevant for my purposes. I do have a lot of experience, so am sure when fermentation is done.

Offline blackislandbrewer

  • Cellarman
  • **
  • Posts: 39
  • An Ode to Beer
Re: Low Volume Hydrometer - Any Ideas?
« Reply #21 on: July 01, 2015, 02:04:16 AM »
If, for whatever reason, you need to take that many samples, you could use a clear plastic wine thief to take the sample, then once you've made your reading, release the sample back into the fermenter (gently, so as to not introduce oxygen). http://www.northernbrewer.com/shop/winemaking/wine-equipment/fermtech-wine-thief

That may be effective providing you sanitize the hydrometer, otherwise you are risking infections.  Also sounds like a recipe for oxidation even if being careful. 
In my experience, it has not been a problem, or at least not one the judges can pick up. But it is still a solution.
David
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
When I read most of the posts on homebrewing forums, I hear them in the voice of the Comic Book Guy from "The Simpsons"

Offline erockrph

  • Official Poobah of No Life.
  • *
  • Posts: 6807
  • Chepachet, RI
    • The Hop WHisperer
Re: Low Volume Hydrometer - Any Ideas?
« Reply #22 on: July 05, 2015, 06:11:42 PM »
Personally, I rarely bother with an FG any more unless I taste something unexpected. I use a refractometer for a reading at the start of the boil and right at pitching just to make sure I don't need to make a gravity adjustment, and that's usually the end of it.
Eric B.

Finally got around to starting a homebrewing blog: The Hop Whisperer