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Old 05-14-2007, 04:54 PM   #1
HarvInSTL
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Default DME weight?

I bottled my first batch last night and using the calculator on TastyBrews it said I should use 6.5oz of DME for a 5gallon batch at 68deg.

Well after weighing out 6.5oz of DME on my scale it seemed to be quite abit more than the 5oz of Corn sugar I had prepackaged with my kit. Is that normal?

I just want to make sure that I don't have some 22oz bottle bombs!

Also the 6.5oz should get me to 2.3 Vol @ 68deg for a Robust Porter which is 1.8-2.5Vols.

Was my thinking correct in this or am I way off base?

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Old 05-14-2007, 04:59 PM   #2
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I can't remember the exact numbers but dextrose is almost 100% fermentable and DME is quite a bit less which is why you need more to achieve the same results. Someone can probably post the actual numbers, I can't remember off the top of my head.

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Old 05-14-2007, 07:50 PM   #3
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Corn sugar is also noticeably more dense than DME and so a given mass of corn sugar will take up less space than that same mass of corn sugar. Think about a pile of large rocks sitting next to a pile of pebbles, which has more air in the pile? Now, shrink those down, the DME is the rocks and the corn sugar is the pebbles.

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Old 05-15-2007, 01:39 PM   #4
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Hey Harv,
I've used DME for priming the last couple batches I've bottled. I used 1.25 cup
HTH

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Old 05-15-2007, 01:46 PM   #5
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According to Promash, 6.5oz of DME should produce just over 2 volumes of CO2 at 68 degrees F when used to prime 5 gal.

Check How to Brew for info on how many volumes of CO2 you want for a given style.

DME is less dense than corn sugar.

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