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Old 09-10-2011, 06:13 PM   #1
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Default Pilsner at 1.040 from og of 1.055 after 12 days should I be worried?

I used wyeast 2206. This is the second use for this same batch of yeast. It is at 50* in a ferm chamber.

The sample tasted great!

I know - give it more time. I was hoping to get this in secondary in a keg to free up some space but I guess this will have to wait.

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Old 09-10-2011, 06:16 PM   #2
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I used wyeast 2206. This is the second use for this same batch of yeast. It is at 50* in a ferm chamber.

The sample tasted great!

I know - give it more time. I was hoping to get this in secondary in a keg to free up some space but I guess this will have to wait.
I'd be worried! Did it get a super late start, or has it been going so slowly all along? Have you calibrated your hydrometer?
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Old 09-10-2011, 07:17 PM   #3
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I'm using a refractometer. I have three other beers fermenting and I tested them - they seem to be about where they should be so I think the refractometer is ok. I took a tiny sample at first and got this reading then I used a thief to get something further down the fermenter and got the same thing. It is my second use of this yeast - I put the used slurry in about 1.5 liters of wort and put it on the stir plate for 24 hours. I had lots of activity in the starter (more than usual).

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Old 09-10-2011, 07:22 PM   #4
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is 1.040 the pure refract reading or did you adjust?

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Old 09-10-2011, 07:22 PM   #5
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I'm using a refractometer. I have three other beers fermenting and I tested them - they seem to be about where they should be so I think the refractometer is ok. I took a tiny sample at first and got this reading then I used a thief to get something further down the fermenter and got the same thing. It is my second use of this yeast - I put the used slurry in about 1.5 liters of wort and put it on the stir plate for 24 hours. I had lots of activity in the starter (more than usual).
No, the refractometer is not right.

Alcohol skews the reading. It either needs to be run through some software conversions, some complicated math, or a hydrometer reading needs to be taken. I'd take a hydrometer reading, as I believe the beer is far lower than 1.040 if that's the reading you got from the refractometer.

If you're reading 10 brix now, the hydrometer could easily read 1.030 or lower.
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Old 09-10-2011, 08:10 PM   #6
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OK - so now I leaned how to use a refractometer. I just got this thing and have only used it in wort - this is the first time that I am using it in fermenting beer. I just did the conversion using brewmate and it is at 1.030.

1.030 still seems a bit high to me but it is far better than 1.040.

Is there an advantage to using a hydrometer instead of the refractometer and adjusting the reading using software?

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Old 09-10-2011, 08:24 PM   #7
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This is getting intersting. Now that I have learned to adjust this I have two other beers that seem to be done or close to done.

Das Boot - German alt beer with german ale yeast 1007. Started fermenting 8/30 (11 days ago) and has gone from 1.050 to 1.008. This thing needed a blow off tube (I was surprised at this). I just pitched the yeast with no starter. This puts it at 83% attenuation. Perhaps a bit over attenuated for an alt beer (supposed to be 1.010 FG).

Pale ale - 1.048 - 1.014 in 6 days. According to brewmate this is already at 72% attenuation. This is with S-05.

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Old 09-10-2011, 09:05 PM   #8
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when in doubt, use a hydro.

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Old 09-10-2011, 09:30 PM   #9
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This is getting intersting. Now that I have learned to adjust this I have two other beers that seem to be done or close to done.

Das Boot - German alt beer with german ale yeast 1007. Started fermenting 8/30 (11 days ago) and has gone from 1.050 to 1.008. This thing needed a blow off tube (I was surprised at this). I just pitched the yeast with no starter. This puts it at 83% attenuation. Perhaps a bit over attenuated for an alt beer (supposed to be 1.010 FG).

Pale ale - 1.048 - 1.014 in 6 days. According to brewmate this is already at 72% attenuation. This is with S-05.
The refractometer is useless at this point. You can't really get an accurate FG with it. You need hydrometer readings when you think the beer is done.
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Old 09-10-2011, 09:50 PM   #10
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OK so I just rechecked the pilsner and the altbier and they were both the same as the corrected refractometer readings - the pilsner was 1.030 and the altbier is at 1.009 (maybe 1.008 or even 1.010 - my eyes aren't that good).

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