Acid InterconversionDeacidification ClassicDeacidification Double Salt MethodDeacidification Extended Double Salt MethodDeacidification MalolacticIncrease TA using a specific acid / TA TargetIncrease TA using an Acid Addition Rate

Deacidification Classic

Amount of deacidification agent to add

Purpose

Use this calculator if you are looking to:

  • Make small pH/TA adjustments to wines using potassium bicarbonate.
  • Remove Tartaric Acid from musts or juice using calcium carbonate.
  • Reduce TA in must, juice or wine using K2CO3 or KHCO3.

    • Background

    This method will only remove tartaric acid, not malic, but will promote bitartrate precipitation.
    To reduce TA by 1g/L requires 0.67g/L KHCO3. (1g/L KHCO3 reduces TA by 1.5g/L). If potassium level is low, or the wine is already quite tartrate stable, there may be no precipitation of bitartrates and 0.67 g/L KHCO3 will remove less than 1 g/L of acidity. Otherwise cold stabilisation is required to realise the full de-acidification.
    Check with a lab trial, and freeze the trial to get a cold stable pH and TA. Without cold stabilising, expect 1 g/L of KHCO3 to reduce the TA by only 0.75g/L.

    INSTRUCTIONS
    KHCO3 can be added directly to the wine, slowly with thorough mixing, or as a slurry. Leave space for foaming due to the CO2 released.

This winemaking calculator is provided to you courtesy of NuVerge Canada Inc.

Disclaimer

Winemaker.Plus calculators purpose is to provide an alternative to user's current method(s). In making any additions or estimating winemaking data, we are strongly urging the user to respect all legislative requirements, follow regulatory health and safety protocols and make additions or estimate winemaking data based on number of sources including and not limited to supplier technical sheets, MSDS's and or local appellation resources. In no event shall Winemaker.Plus or its employees be liable for any direct or/and indirect loss and/or damage arising from the use or/and missuse of calculators in this progressive web application. Winemaker.Plus makes no representation, warranty, or claim that the information available in any of the calculators of this progressive web application is current or accurate. WinemakerPlus is not responsible for any errors or omissions in the resources or information contained in this progressive web application.