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Old 10-15-2008, 02:24 PM   #1
Liquisky
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Default Question about Potassium Carbonate

I've been thinking about adding this to my recipies. My home brew shoppe doesn't have it and hadn't heard of using it.

Where's the best place to buy this? Also, is Postassium bicarbonate and Potassium carbonate the same thing?

Thanks.

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Old 10-15-2008, 03:22 PM   #2
hightest
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Austin Home Brew has both items - seeing as you're in TX...

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Old 10-15-2008, 03:35 PM   #3
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To answer your other qestion, I's suggest you first read the FAQ on Potassium Carbonate, and then consider these additional points:

  • to achieve the same ionic potassium contribution (136 ppm) one would have to add ~45% more bicarbonate (6.6g total). FWIW, the carbonate is ~3.5 times more soluble in water than is the bicarbonate form.
  • Potassium bicarbonate has essentially the same stabilizing effect on pH as does the carbonate. Both dissolve readily in water, but if you add the bicarb to hot water, it will break down into potassium carbonate and... CO2.
Which of the two compounds would be better for mead fermentation? Although I've used both, I can't honestly say if one is better than the other...
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Last edited by hightest; 01-30-2009 at 06:57 PM. Reason: correct % & weight
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