1 Posted: Thursday, September 14, 2017 2:45 AM

Hi - I've just started with my first brew with the Coopers Craft Beer Kit and I am on day 6, when I need to use the hydrometer.

Trouble is, I can't figure why it pokes out of the brew at almost the very top where it shows 1.000 and and arrow pointing down, so I tried using tap water and the reading is halfway between where it shows 0.9000 and a downward arrow and 1.000 with the downward arrow.

Is it broken or am I just dim?

2 Posted: Thursday, September 14, 2017 7:25 AM

Hi, welcome to the forum!

Your hydrometer should read 1.000 in water @20ºC. Seems like yours is reading low, which seems to be a bit of a recurring issue with the Coopers hydrometers…

To get an accurate reading of your beer's specific gravity you'll need to compensate for the error. So, if in water the hydrometer is reading say 0.997 then you'll need to add 0.003 to whatever the reading is when you test your beer.

3 Posted: Thursday, September 14, 2017 8:10 PM

Thanks very much for the tip. I ordered another hydrometer that a lot of people on here recommend which seems easier to read, but just happened to run another check this morning and this is what it looks like:

https://ibb.co/bDfVR5
https://ibb.co/cim4m5
https://ibb.co/bDfVR5

So that's 1.008 correct?

I'll try and find some distilled water and do the same to check if I need to adjust the reading

Tim

4 Posted: Thursday, September 14, 2017 9:13 PM

Tim Brewer:

Thanks very much for the tip. I ordered another hydrometer that a lot of people on here recommend which seems easier to read, but just happened to run another check this morning and this is what it looks like:

https://ibb.co/bDfVR5
https://ibb.co/cim4m5
https://ibb.co/bDfVR5

So that's 1.008 correct?

I'll try and find some distilled water and do the same to check if I need to adjust the reading

Tim

Looks like it's around 1.007 - 1.008. And, if your hydrometer is indeed reading low then in reality it's probably more like 1.012.

You don't really need t use distilled water. Tap water @20º is sufficient.

5 Posted: Friday, September 15, 2017 4:34 AM

Thanks Black Sands. Love the avatar!

I guess as long as it stays constant, I will know fermenting is over and I didn't take an initial reading, as I'm not too bothered on first brew about calculating alcohol content. New hydrometer should arrive soon, so I'll test with that.

6 Posted: Friday, September 15, 2017 6:26 AM

Looks to be about 1.007 in the photo. The 1.008 line is visible underneath the meniscus, you can see it in the beer itself. If it's 5 points out that makes it 1.012.

You can snip pieces off the red tip to make it read more accurately if it is reading low. I suspect it might be done deliberately to allow this calibration.

7 Posted: Tuesday, September 19, 2017 12:39 AM

Thanks again for your help.

I got a new hydrometer, which seems more accurate than the standard Coopers one.

I'm on day 11 and if I read you right, with adjustments it doesn't look like it is changing much, but according to this new fangled hydrometer, I should leave it until it drops into the yellow band. Should I leave it for a few more days and keep checking against this new reading, or move to bottling? Certainly doesn't seem as if the yeast are chomping on anything!



Tim

8 Posted: Tuesday, September 19, 2017 6:17 AM

I have the same hydrometer. Don't take any notice of the yellow band; I don't even know why they put it on there because it's bullshit to say beer shouldn't be bottled until it reaches that zone. NONE of mine ever gets to an FG that low.

That one is a bottom meniscus read hydrometer as well. From the looks of the photo it's reading about 1.011-1.012. I'm guessing it was tested in 20C water as well?

9 Posted: Tuesday, September 19, 2017 4:18 PM

Dunno if anyone has made this observation but why does the hydrometer always come to rest with the scale you want to read facing away from you?

10 Posted: Tuesday, September 19, 2017 6 PM

^ Always happens!

11 Posted: Wednesday, September 20, 2017 6:12 AM

Gag Halfrunt:

Dunno if anyone has made this observation but why does the hydrometer always come to rest with the scale you want to read facing away from you?

Murphy's Law

Last edited by Otto Von Blotto (Wednesday, September 20, 2017 6:12 AM)