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Chalk (Calcium Carbonate)
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Description

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) 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. 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

Weight8 oz.
Community Q&A

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Using RO water so I need some treatment.
Travis Nissen on Jul 31, 2018
water chemistry
mitchell f on Jul 10, 2018
Using RO water so I need some treatment.
Travis Nissen on Jul 31, 2018
Build brewing water with temporary hardness
Greg H on Jul 17, 2018
water chemistry
mitchell f on Jul 10, 2018
Resupply
Thomas E S on May 28, 2018
Beginning my adventures in all grain brewing
Dennis F on May 10, 2018
needed for adjusting water
Brad F on Apr 19, 2018
Water chemistry, the next level!
Carlos H on Mar 29, 2018
Needed More
Brian S on Mar 23, 2018
for additions to RO water
Robert P on Mar 6, 2018
To adjust my water profile
KEVIN G on Feb 9, 2018
Water ph adjusting
Dan S on Feb 2, 2018
Water calculation adjustment.
George B on Jan 15, 2018
Build brewing water with temporary hardness
Greg H on Jul 17, 2018
Resupply
Thomas E S on May 28, 2018
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Needs re-sealable bags
How much more would it cost to include re-sealable bags?
February 9, 2018
Purchased
7 months ago