Calcium carbonate

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Calcium carbonate (CaCO₃), also known as chalk, is a weak base.

With regard to brewing, calcium carbonate should only be used to make a Lactobacillus starter. See Sour beer. To be very clear: Never ever use calcium carbonate for any other brewing purpose.

In wine, calcium carbonate can sometimes be used to lower TA, although potassium carbonate or potassium bicarbonate are usually a better choice.^{[citation needed]}

Where to purchase:

• MoreBeer

 

See Also

• Water