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Old 08-21-2014, 04:45 PM   #1
Rezer
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Default 90%+ Apparent Attenuation

This is my first homebrew and I'm using Cooper's Australian Lager canned kit.

My OG was ~1.043 after adjusting for temperature. My FG 6 days later was ~1.003 after adjusting for temperature.

I didn't think much of it before, but when I plugged the numbers into a calculator for alcohol content, a glaring 93% apparent attenuation spat out. A quick google search has people saying that this number is basically ridiculously high and not achievable.

Testing my hydrometer readings, I waited for the foam/head in my sampler to subside, and I spun the hydrometer to remove any bubbles. Even if I did misread, I'm still going to be close to that 90% mark.

Did I screw up? Did I get lucky? Is this something you'd expect from lagers?

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Old 08-21-2014, 11:33 PM   #2
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What was your fermentation temperature?

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Old 08-22-2014, 05:56 AM   #3
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Quote:
Originally Posted by Rezer View Post
This is my first homebrew and I'm using Cooper's Australian Lager canned kit.

My OG was ~1.043 after adjusting for temperature. My FG 6 days later was ~1.003 after adjusting for temperature.

I didn't think much of it before, but when I plugged the numbers into a calculator for alcohol content, a glaring 93% apparent attenuation spat out. A quick google search has people saying that this number is basically ridiculously high and not achievable.

Testing my hydrometer readings, I waited for the foam/head in my sampler to subside, and I spun the hydrometer to remove any bubbles. Even if I did misread, I'm still going to be close to that 90% mark.

Did I screw up? Did I get lucky? Is this something you'd expect from lagers?
Adjusting for temperature is far from a precise science, how hot were you measuring your OG and FG? You should always try to measure them at or near room temp...
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