Questions tagged [specific-gravity]
Specific gravity in brewing is the ratio of the density of the wort to that of water.
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specific gravity in wine making
I'm trying to make wine out of pomegranate juice, its almost a month that the must is fermenting but when I read the specific gravity with the hydrometer is always around 0.008. If a try to calculate ...
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Refractometer or options?
I have advanced to a very prolific brewer and have mastered many aspects of home brewing. For some reason I seem to be unable to master the issue of Specific Gravity. Try as I may, I just do not ...
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Gravity concerns slow fermentation
I have returned to home brewing after a long leave of absence and would be very grateful for some advice just to make sure my wort is still going in the right direction as I am getting a bit concerned....
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Higher starting gravity
Is it true to get a higher S.G. you can by add extra Suger and fermentables like extra suger DME. I 'm trying to find a way to raise, The S.G and F.G
to get a higher ABV.
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How much will initial oxygen in wort affect final alcohol in beer?
According to White and Zainasheff: Yeast: The Practical Guide to Beer Fermentation
By Chris White and Jamil Zainasheff, wort should have 10 mg/L (10 ppm) with dissolved oxygen before pitching. This ...
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What is too high a gravity to bottle condition cider?
I tasted my cider today and if I could bottle it now I would. The only problem is that the gravity is at 1.012. My concern is that I could create bottle bombs if I bottled it now. Is it possible to ...
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DIY BrewBug based offerings?
BrewBug, is a neat little toy that essentially has a "floating bob" that measures the temperature and specific gravity of the wort as it is fermenting, allowing for niceties like changing the ...
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Increase gravity in secondary
I added a pot of coffee to my secondary without thinking much about the water content. Now the SG is lower than I want (weak body). Could I put it back into the kettle and boil the excess water off ...
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Can I fix a higher than anticipated OG after primary?
I just brewed a witbier that was way below the estimated preboil gravity of 1.49. I only got 1.34 in case you're wondering. I've never had that bad of an efficiency before. The grains came ...
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Used Wrong Yeast.... Final Gravity Too High
I am considering two techniques for lowering my specific gravity but am unsure if my methods will work. I am currently fermenting a bock style. It's not a true bock because I don't have the ability to ...
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Safe to return sampled wort to the primary after sampling?
I made my second batch of beer (ever) last Friday night, and in a few days' time I'd like to sample a bit of it so that I can check its gravity.
Provided that I sanitize all of my equipment (siphon, ...
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Checking gravity at mash out.
I'm still very new to all-grain, 7 batches in, so I am still a little shaky with procedure. The other day before my last batch I was re-reading "how to brew and noticed that John Palmer recommends ...
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Stalled fermentation
I've started brewing an Oktoberfest. It has been in primary for a little less than a week. The first 24 hours was good, super active. After about a day, it got pretty warm here, and the ...
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Determine honey density and needed volume for target starting gravity
Suppose I have honey of unknown specific gravity.
I want to mix a mead must with a target specific gravity g_t and volume V_t.
How do I determine how much honey to use?
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Large drop in specific gravity over 24 hour period
My cider brew (5 gal) has experienced a large drop in its specific gravity readings over a 24 hour period. Yesterday it was measured at 1.05 with the kit recommending bottling at 1.04 or lower. Today ...
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Determining the right gravity after mash in all grain brewing
Say I am brewing a beer that is supposed to have an OG of 1.050. I'm doing all-grain brewing and at the end of my mash & sparge, if I took the gravity at that point, what should I expect?
I ...
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Specific Gravity Reading
So with your help I've made into secondary fermentation of my first hard cider batch. I just have a question about specific gravity.
I started with a reading of 1.060.I measured it again from a ...
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FG of bottled condition beer lower than FG of fermented beer
I brewed a session stout about 4 months ago, and left it in the fermentor for two weeks. The FG was 1.012 one week in, and I checked every few days until 2 weeks in, and the FG remained at 1.012. I ...
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How much free (ie, fermentable) suger is contained in canned fruit puree and how does this affect gravity?
Going to add one can (49oz) of Vintners Harvest Peach Puree to secondary and curious if/how much this will raise gravity. The nutritional label states the can contains 190 grams of sugar, but not ...
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Specific gravity after adding cold-pressed coffee?
Like an amateur, I forgot to measure my cold-pressed coffee's gravity before combining in secondary. Anybody have an estimate of the gravity of a 24-hour cold-pressed steep?
I started with 36 ounces ...
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Specific Gravity: Refractometer and Hydrometer Disagree
I have tried to use a refractometer when brewing. I can never get an accurate pre-boil specific gravity reading that consistently aligns with my post boil, cooled wort hydrometer reading. I spoke ...
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Testing specific gravity before bottling
I brewed a batch of beer about 3 weeks ago, and I was told to test the gravity prior to bottling to make sure it is ready.
My question is, will I do any harm by opening the fermentation bucket in ...
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How to get a feel for the numbers involved in brewing
So I drink a lot of beer (go figure) and I try to characterize it each time. How much carbonation there is, what color it is, mouth feel, what specific flavors are involved, how hoppy it is, how malty ...
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Is Final Gravity a good indicator of sweetness?
This question is as simple as the title reads. In general, if I know the FG of any given beer, can that be a good indicator to me of how sweet that beer will taste? So the higher the FG, the sweeter ...
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Gravity Measurement Tools
What tools for measuring specific gravity are available to the homebrewer? EG: refractometer, hydrometer.
What scale do they measure? EG: Brix, plato
Since there hasn't been much activity on the ...
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Didn't hit gravity--how to calculate how much malt extract to add to the fermenter?
Lets say you were aiming for 1.047 but only hit 1.032. In a 5 gallon batch, how much malt extract would you need to add to the fermenter to bring it up to the desired gravity?
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Muntons pilsner specific gravity not coming down
I'm relatively new to homebrewing and I tried a Muntons Extract Pilsner kit. I followed the instructions on the kit to a T and after 3 weeks (and having read other questions and comments on this site)...
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First brew... 1.010 gravity in 72 hours?
I'm in the middle of my first brew and I'm having some issues. Not sure if I have completely ruined this thing or what. Heres the deal...
During the process, everything went pretty much as planned ...
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When/How to Measure Pre-Boil Gravity to Determine Mash Efficiency
I routinely take my pre-boil gravity after sparging to determine mash efficiency so that I can throw in DME or Dextrose for a lower than expected yield or add water for a higher than expected yield, ...
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Do I need to adjust for temperature with a refractometer?
Sorry for the simplicity of the question, but I asked Google and she didn't know. Stackexchange is my next stop.
I took a brix reading of my steam beer wort at 13 brix (~1.052 SG), but it was ...
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Measuring specific gravity without sampling
Is there any way, I can measure SG with a sensor of some kind?
I guess I'm not REALLY after SG, but rather a way to determine that fermantation is done, without sampling.
I would very much like hook ...
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Is my SG too low? [closed]
I have an SG of 1,040, and the target OG is about 1.065.
I was wondering if this is too low?
Should I add more water?
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first stage beer seems slow (stopped?)
My first brew! I forgot to add yeast and put it in a day later. #embarrassing
I took a SG reading after 5 days: 1.018
I took another reading today, 7 days in, and it's only dropped to 1.016.
The ...
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Does any "probe" exist which can detect the gravity of wort?
I use a Raspberry Pi in combination with a temperature probe to measure the temperature of my wort. It would be nice if I had another probe that could measure the current gravity of my beer, so that ...
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What can I learn from fruit beer gravity?
I just bottled a batch of a watermelon beer where the gravities going into and out of primary matched the predictions (OG 1.050, FG 1.012).
I added watermelon chunks in secondary and when it finished ...
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FG dropped after wort cooled
Did a brew yesterday, hit the desired SG after the boil time - or so I thought. After cooling the wort, the SG dropped 2 points. What would cause this?
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Why would OG be significantly higher than predicted?
I know there are several questions on the forum about OG being lower than predicted. Please bear with me though. I'm at a loss. I just brewed a straightforward extract wheat beer recipe. The ...
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Why doesn't FG reach 1.000?
My second beer brew has pretty much finished its primary fermentation. It started at 1.044 and is currently at 1.014... I don't expect it will go much further.
Having brewed numerous wines I ...
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Campden Tablets to Control Final Sugar Content
I've used Campden tablets per a recipe for cider to prepare the unpasteurized cider before pitching yeast, but recently came across the following in Wikipedia:
Campden tablets are also used towards
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Why is it necessary to approximate starting and finishing gravity?
In the book "Home Beermaking", by William Moore, it talks about calculating starting and finishing gravity in chapter 6. I believe that he's talking about when I get good enough at homebrewing to make ...
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Why does gravity increase between pre-boil and pitching?
My handy-dandy "Beer Craft" book has a handful of recipes with useful information, including expected targeted pre-boil gravity, original gravity, and final gravity. Their pale ale recipe, for ...
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should I/how do I account for temperature differences for gravity readings?
I've taken my OG at the start, and another reading last night. Only last night did I register that my OG seemed slightly low according to what the brew can suggested as typical.
My OG was 1.037 (can ...
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Different OG than predicted
Just brewed a batch, and my OG reading is significantly different (1.051 as opposed to 1.070) than what Beercalculus.com predicted based on my recipe. Is there any possible reason for this that ...
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Why shouldn't we just use scales?
New on homebrew.SE, great forum here. Just a quick question - why shouldn't we just use weight scales to determine the OG and FG? My Hydrometer has broken and I can't be stuffed really buying a new ...
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Hydrometer correction equation
Can you identify the constants in your hydrometer correction equation? I know that 2.6X10-6 is the coefficient of thermal expansion for the hydrometer glass; what are the others (not related to ...
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Ensuring an accurate gravity reading
So I've brewed between 6-10 batches of beer at home using partial boil methods but have never managed to get accurate gravity readings.
The issue I have is that my readings somehow always seem to be ...
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My cider stopped fermenting until I swished it around in the bucket a bunch, then continued. Is that normal?
My malted cider had been brewing after about a week in my plastic brewing bucket to the point where the little 'hat' thing in my airlock fell onto the 'neck' (no internal pressure).
I opened it up ...
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Can I derive Final Gravity from Original Gravity and ABV?
I think the answer is yes. Since we use OG and FG to determine ABV ... I would assume we could do the same with ABV and OG to determine FG, right?
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Should I be disappointed?
Just started, so my question is very basic.
I got Coopers Lager Kit, did everything by instructions, temperature has been stable at 22-24C but gravity doesn't go down. OG was 1.039, dropped to 1.020 ...
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How can this BeerSmith 2 gravity calculation be correct?
My beersmith brew sheet printout gives me some gravity numbers that I can't make head or tail of:
How can the pre-boil gravity (when I haven't added 57% of the malt yet) be 1,084, while the post-boil ...
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