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Sorry if I caused confusion. I'm just a twit from twatter. :-P

That range can be worked out by the head and density of the liquid in your air trap ;-)

Yes, with the yeast growth I was referring to a different calculation where I was trying to estimate the amount of alcohol / CO2 for a given amount of sucrose. That might be a much trickier problem. As for the CO2, if we are brewing in a vessel with gas trap on the top we can assume the Partial...

Thinking about it, if you measured mass change and thermal output you could probably come up with a decent estimate of the size of your active yeast culture as well as your specific gravity. Might make for an interesting project.

I think that it should be relatively easy to find some scales that offer the kind of performance required. A quick google brought this up (removed for being spammy) They seem to offer something with a 30kg limit and 1g accuracy. If you are brewing 30L of beer though, you might be able to use...

Hi, I'm mjmdavis, the guy posting chemical equations on Twitter. Good to be here, hope someone tries weighing their brew!

Just to clarify, you should be able to see the difference on a 10L batch with a 1 or 10 gram scale. 1/10th would be overkill. I have amended my post to clarify this. As for the watts given out by your brew, I would have to hit the books again. I don't have the bonding energies of the relevant...

It's a pleasure. I have updated the above post with some of the working for people to examine / check. The take home is that the weight of CO2 is indeed appreciable and should be quantifiable if you have a gram accurate scale or a 10 gram accurate scale. -edit to clarify 1 or 10 gram as...

Hi, I'm mjmdavis, I'll post my equations on here in a bit. I would be interested to see anyone trying this. -edit: Here we go with the back of the envelope calculations. Assuming perfect fermentation of sucrose to ethanol, I threw this together. Sucrose to Ethanol goes a little like this...