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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MoreFlavor Store
In case wine too acidic need to raise PH
Michael T L on Mar 7, 2023
Water chemistry
Armando O on Feb 23, 2023
In case wine too acidic need to raise PH
Michael T L on Mar 7, 2023
Making a Topo Chico clone
GREG A on Feb 25, 2023
Water chemistry
Armando O on Feb 23, 2023
Making sparkling water
Emry O on Feb 23, 2023
Water adjustment
Chris M on Feb 22, 2023
Water correction
mark3885 on Feb 10, 2023
dog food :)
Todd E on Jan 5, 2023
Topo Chico
Leo Martinez I on Nov 22, 2022
no one 1lb bags available
Vincenzo D on Aug 24, 2022
water profile
Steven S S on Aug 23, 2022
We moved and I can't find my chemicals!
Anthony L on Aug 9, 2022
To make topo Chico at home
DYWANDA L on Jul 23, 2022
watched you tube video
Molly K on Jun 1, 2022
good price!
Kent T on Apr 21, 2022
Dean G on Apr 13, 2022
Use to raise the pH in meads
Tracy K on Mar 21, 2022
To help build up a water profile from distilled water
Christopher B on Mar 8, 2022
you were out of the 50 lb sack
Greg M on Feb 26, 2022
Water chemistry
Robert S on Feb 4, 2022
I plan to add it to my water
Jamie M on Jan 10, 2022
Christopher S B on Dec 18, 2021
water chemistry
Anthony Caezza on Dec 15, 2021
Lower acid in wine
Bruce W S on Nov 29, 2021
Jed r H on Nov 20, 2021
Water adjustment
Valued C on Oct 30, 2021
works well early on reducing acidity
John G. Gbur J on Oct 8, 2021
to recreate water profile
Robert W on Sep 30, 2021
I'm trying as a calcium supplement to be suspended in a gelatin mixture for aquatic snails and other invertebrates for healthy shells and egg production.
brandon s on Sep 4, 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
Matt Mustain 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 Forneris 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
Making a Topo Chico clone
GREG A on Feb 25, 2023
Making sparkling water
Emry O on Feb 23, 2023

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
over 3 years 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
over 4 years ago
Rated 5 out of 5
Use it for buffering Lacto starters or mixed culture storage.
October 6, 2018
over 6 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 6 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