Questions tagged [measurements]

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5 votes
3 answers
16k views

Sugar in water effect on specific gravity?

Is there an equation or relation to describe how much sugar is to be added to water to obtain a liquid with a specific gravity? In This question, for example, it is mentioned that "1 lb in 1 gallon ...
2 votes
1 answer
33 views

Method to measure specific gravity above refractometer range?

I purchased this refractometer for use in brewing hard cider. The recipe I'm using involves adding sugar and then boiling down the juice by about 1/3. After reducing the liquid, the specific gravity ...
10 votes
2 answers
3k views

How does electrical conductivity of a fermenting liquid change over time?

Has anyone ever measured how the conductivity of fermenting liquids changes over time? I have a hypothesis that it does change over time, and that as the fermentation rates and stages change, so will ...
5 votes
2 answers
96 views

What is the name for this gigantic dropper or pipe that a person use to suck liquid out of a container?

I saw it in a video about hydrometer, and I can't find anywhere where to buy this gigantic dropper. what are its name and size? It seems about 250ml which is what I need. Thanks! The tube in the ...
2 votes
0 answers
419 views

Using Refractometer to measure Carbonation Level

I use a Refractometer when I brew mostly for the boil off phase of an all grain batch. This helps me make sure I get to the exact FG I want for the specific type of beer. It works well and I don’t ...
1 vote
2 answers
1k views

Sensor for measuring alcohol content of wine

I would like to know if there is a sensor that can monitor its alcohol content and displaying it to my LCD display. Your answers would be a great help to my dreams. I'm a computer engineer taking my ...
5 votes
1 answer
428 views

Measuring alcohol when using ginger bug

I have recently started to get my feet wet by making some ginger beers using a ginger bug to start the fermentation. I would like to know the alcohol content of my final product, but as the ginger ...
2 votes
1 answer
287 views

Can blood glucose devices measure anything in beers?

Those blood glucose devices used to control diabetes disease, can them measure anything in beers? Could them display different values of different beers? How do they work compared to hydrometers? ...
5 votes
4 answers
827 views

Measuring alcohol content

How do you measure alcohol content in a fermented drink without relying on measurements of gravity? Say we have a bottle of water (pasteurized), add sugar (that has been treated to have no living ...
1 vote
4 answers
118 views

when does the alcoholic fermentation end?

No special instruments / meters available. Is there an approximate way to tell when the alcoholic fermentation has stopped ? I am asking so I know when to add the MLF yeasts in. Viniflora CH16 ...
7 votes
3 answers
2k views

Measuring yeast in a slurry

Please tell me if I'm being overly simplistic here. I was reading the book yeast by Chris White and Jamil Zainasheff. In the book, they talk about measuring how many cells are in a slurry by using a ...
3 votes
2 answers
48 views

How much sugar should be added in 1 L of Grape must?

I get that most of homebrewers make large batches and they measure it in gallons, but how do I shrink the recipe measurements if I will ferment just one liter of grape juice?
2 votes
1 answer
132 views

Fruit 'wine' - acetic acid and alcohol

I did a little bit of a fermentation experiment by adding water to a large jar half full of fruit (nectarines). I did not add any sugar or yeast. The final product is very sour, which I'm assuming is ...
1 vote
1 answer
1k views

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?
2 votes
4 answers
405 views

First brew: dry hopped mead, probably stuck. How to best proceed?

I'm on day 9 of my first attempt at home brewing (1 gallon batch), and based on my measurements on day 5 and today it appears to be stuck at 1.010 Original Gravity was 1.065 Kind of just went gung-...
3 votes
4 answers
1k views

Wine Thief or a simpler way to sample wort from a carboy?

I was unable to get an O.G. sample from my first batch in the carboy (tried using a long siphon tube with my finger held over one end...), so I'm trying to buy a wine thief to take final gravity, but ...
0 votes
0 answers
32 views

Is there a way to estimate the actual temperature where the yeast ferments without having a sensor inside the carboy? [duplicate]

I was reading an article on fermentation temperature control where it says, However, since yeast growth and fermentations are exothermic and therefore generate heat, figure that the temperature ...
7 votes
10 answers
4k views

How can I permanently mark my carboys?

I have several glass carboys which I would like to permanently mark with gradations to measure liters and gallons. I've tried using permanent marker as well as heavy-duty tape, but inevitably both ...
3 votes
1 answer
494 views

Reading a 3 scale hydrometer

My dad bought me a hydrometer and then left the country. Now I don't know how to read all measurements. 1st scale: 1-13% (I presume this is the potential alc scale) 2nd scale: 1-26 3rd scale: 1-28 (...
6 votes
2 answers
9k views

How do I measure the alcohol of a fruit beer?

According to some recipes I have seen, a simple way to make a fruit beer is to make a regular "base" beer, and then rack it on top of the fruit after about a week of fermentation. In that case, how ...
4 votes
1 answer
184 views

Estimating final alcohol by Original Gravity

Is it possible to estimate final alcohol value from the orginal gravity of the wort? Is apparent attenutaion involved in the estimation? I guess if I know OG and FG this is the answer. What if FG is ...
4 votes
1 answer
145 views

Home method to measure sugar profile

Is there any sort of (financially attainable) test kit available to measure the sugar profile in wort and beer? In particular, I'd like to know the breakdown of glucose, fructose, sucrose, maltose, ...
3 votes
2 answers
181 views

What exactly should I measure while brewing?

I want the answers to be geared towards meads/wines if possible. There seems to be so many things to measure. Which are the ones that really matter? I've started spending a lot of time taking all ...
8 votes
1 answer
134 views

Size of a "Gallons" in recipes

I'm from the UK and only really work in metric. Im having a bit of trouble converting this recipe into metric. In brewing does a "gallon" mean the imperial or american gallon? (23L or 18L)
2 votes
2 answers
3k views

Degrees Plato vs Specific Gravity

What is the difference between these measurements and is one better than the other for any particular use? Which measurement scale do you use, why?
7 votes
2 answers
1k views

How to measure wort oxygenation

As a follow-up to a couple of other questions: How to Properly Oxygenate Wort Wort aeration on a budget How do you measure oxygenation of wort? What methods are available for a beginner brewer (low-...