Chalk (Calcium Carbonate)

Chalk (Calcium Carbonate)

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Calcium carbonate is used to reduce the acidity of wine. It does not require cold-stabilization to force complete precipitation, as does potassium carbonate. However, calcium carbonate is more likely to affect the flavor than potassium carbonate, and may take a few months to fully precipitate. One-quarter ounce (about 4 teaspoons) of calcium carbonate reduces acidity in one gallon by about 0.25%. Foaming may occur because of the production of CO2. Do not use more than one ounce per gallon. Wait 24 hours and rack wine. Calcium carbonate is also used in beer to increase the temporary hardness of water. Traditionally used in English stouts, pale ales and bitters.

Usage: Usage varies with acid level
Common name: Chalk

Community Q&A

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Browse 1 question Browse 1 question and 50 answers
Why did you choose this?
MoreFlavor Store
to make chalk paint
Valued C on Jul 23, 2021
for use in seltzer
Ryan K on Jun 9, 2021
to make chalk paint
Valued C on Jul 23, 2021
Get the water right
Aaron P on Jul 23, 2021
for use in seltzer
Ryan K on Jun 9, 2021
for use in seltzer
Ryan K on Jun 9, 2021
For brewing beer
Cole C on Mar 16, 2021
Irma U on Mar 9, 2021
water conditioning
Chuck Beckman on Mar 5, 2021
good price
LexAckson on Feb 12, 2021
Brewing water chemistry
Valued C on Feb 1, 2021
Need chalk
Daniel L on Jan 26, 2021
Same as above
Matthew S on Jan 23, 2021
upping my water game
Caleb C on Jan 23, 2021
Brewing beer
Steven McPeak on Jan 16, 2021
Fixing our wines; great selection here at MoreWine!
Torben B on Dec 16, 2020
Water chem modification
Glen F on Dec 9, 2020
Water adjustment
Lester House on Dec 5, 2020
Water Profile
Gary E N on Oct 7, 2020
acid neutralizer
Brian V on Sep 26, 2020
trying to lower acid
Arnie Wetzstein on Sep 16, 2020
Adjust brew water
Cheryl H on Aug 31, 2020
RO water adjust
Water adjustment
Jason M on Aug 11, 2020
Adjust the TA
John B on Aug 11, 2020
water profile
Ethan H Schneider on Aug 6, 2020
Easily helps meet pH. This helps me raise pH to desired level when I mash in and find it is lower than 5.2
Jordan B on Jul 23, 2020
This product adjusts ph by reducing excessive acidity
Michael B on Jul 6, 2020
Needed to modulate ph
Mitchell O on Jun 24, 2020
David G H on May 26, 2020
Perfect for adjsuting my water profile!
david o on May 17, 2020
Water chemistry
Tyler B on May 13, 2020
Rhubarb Wine
La Forge Family V on May 12, 2020
Ran out of this water addition
Mainefolks on Apr 14, 2020
Water adjustments
Brandon L on Apr 3, 2020
To adjust pH on my passion fruit melomel
Diki S on Mar 21, 2020
Going to use distilled water for brewing
Justin W on Feb 17, 2020
dark beers
Joseph A Nance on Feb 6, 2020
brewing beer
Anthony K on Dec 16, 2019
Brew water adjustment
Mitchell M on Dec 16, 2019
Water treatment
Mainefolks on Dec 1, 2019
Starting water chemistry for brewing
Ryan N on Aug 28, 2019
Water adjustment
Jacob D on Aug 28, 2019
Creating Water Profile
Brent Reynard on Jul 19, 2019
Raise pH
Steve H on Jun 18, 2019
Only site that offered this quantity for this price.
Edward B on Jun 17, 2019
To play with my water profile.
Billy J H on May 30, 2019
water treatment
Ethan C on May 1, 2019
To lower ph in mash and add calcium at the same time.
Will A on Mar 27, 2019
Water adjustments
Richard M. on Feb 11, 2019
Building water profiles.
Michael Sharpe on Nov 17, 2018
This was the only water adjustment salt I didn't have on hand.
Jon Davison on Nov 17, 2018
Get the water right
Aaron P on Jul 23, 2021
for use in seltzer
Ryan K on Jun 9, 2021

5.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Ca and HCO3 Source
I use calcium carbonate when I need to keep the mash pH from getting too low.
May 19, 2021
7 months ago
Rated 5 out of 5
Made Impasto
Works great to mix with linseed oil and make my impasto for my oil paints
June 13, 2020
1 year ago
Rated 5 out of 5
Use it for buffering Lacto starters or mixed culture storage.
October 6, 2018
over 3 years ago
Rated 5 out of 5
Needs re-sealable bags
How much more would it cost to include re-sealable bags?
February 9, 2018
over 3 years ago
Response from MoreFlavor
Thank you so much for your feedback. We really appreciate the honesty and value great feedback like this as it helps us improve our products. Cheers!
May 27, 2020
Malcolm lieban