Reading Hydrometers..

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Permalink Reply by Chris Reid on October 4, 2011 at 8:02pm

4.1% by volume

 

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Permalink Reply by cerevisia on October 4, 2011 at 8:24pm

Cheers, thanks! Someone said that also add .5 if you're using sugar drop when you bottle (which I am) so that'll boost it up to 4.6% :)

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Permalink Reply by MrC on October 4, 2011 at 8:03pm

Your ABV will be just over 4%.

Here's a few links that should answer all your questions:

 

Reading hydrometers:

http://www.grapestompers.com/articles/hydrometer_use.htm

http://www.howtobrew.com/appendices/appendixA.html

 

Calulating ABV:

http://www.brewersfriend.com/abv-calculator/

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Permalink Reply by cerevisia on October 4, 2011 at 8:25pm

Thanks for the links! :)

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Permalink Reply by Chris Mills on October 4, 2011 at 9:35pm

Don't forget that temperature will affect your readings. Usually hydrometers are calibrated to work at 20°C. You'll need to add approximately 1 point to the reading for every 6 degrees over and vice versa when it's colder. So a reading of 1.041 at 26 degrees means the wort being sampled has a SG of 1.042.

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Permalink Reply by cerevisia on October 4, 2011 at 9:54pm

Cheers Chris! Does this mean I may be looking at a higher %?

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Permalink Reply by Chris Mills on October 4, 2011 at 10:01pm

Possibly. If the wort was warmer than 20 degrees when you took your OG reading then it will likely be a little bit stronger.

Here's an experiment to try: leave some water in the fridge and let it chill down and then take a gravity reading of it. It should look like your hydrometer is wrong and plain water is reading something like 1.003. Leave it on the bench for 30 minutes or longer and it should be back down to 1.000.

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Permalink Reply by Tilt on October 6, 2011 at 9:38am

I've found  this calculator  pretty useful on brew days as I draw off hot samples from the mash tun and kettle.  Helpful to know when to stop the fly sparge as I approach 1.010 and what my pre and post boil gravities are without cooling the sample.

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Permalink Reply by Ralph on October 6, 2011 at 9:44am

Aaaaaargh! My eyes. Why do people make ugly web pages like that when a plain background would make it so much easier to read??

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Permalink Reply by Tilt on October 6, 2011 at 10:06am

Classic - LOL - yep know what you mean, but the tool is the most succinct one I've found so I put up with squinting to make out the numbers.

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Permalink Reply by Dougal on October 6, 2011 at 10:46am

Hahahaha! Well I suppose he did say "dreaded".

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Permalink Reply by Tilt on October 6, 2011 at 2:16pm

True to its name then... I s'pose we can't say he didn't warn us.  I might post him a link to this thread for some user feedback.

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