How to test ABV

[Brett Krapkat]

Sorry if this is a silly question but how do you check the ABV in a Beerdroid.

[Evo]

Good question Brett.  I would like to check the alcohol level too.  I have tried using a hydrometer to measure the specific gravity of the wort by pouring off a small amount from the droid at the end of propagation, and then again at the end of fermentation.  Secondary fermentation apparently adds about 0.5% alcohol after that.  But I got variable results and my alcohol calculations were mostly lower than expected.  I suspect the initial SG in particular was not accurate as the ingredients all sit on the top of the water initially and without having them all mixed in and in solution then a sample from the bottom may be too watery and not reflective of the true SG.  I discussed this with Liam who agreed.  I guess we just have to trust the Brewprint’s estimated levels.

[Brett Krapkat]

Yes I tried the same thing,

With a standard Brewprint I trust Brewart's levels,

But when I do a custom brew I would like to check alcohol level.

Maybe i should ring brewart see if they can advise,  

[Evo]

Good idea.

Let us know what they say.

[Brett Krapkat]

Ok have talked to brewart and they say that for every element or enhancer you add it's 1% plus .5% for carbonation.

But if you don't use a brewprint not sure how you would know.

[Dean Buchanan]

If you are doing a extract brew then you can use a hydrometer, take a OG reading at start after mixing all ingredients & before adding yeast & then a FG reading after EOF then do the calculations to get your ABV %