Detecting your location...
Wine Fermentation Additives

Copper Sulfate (1%) | 1 oz

    Description

    Some homewinemakers will treat wine affected with Hydrogen Sulfide (rotten egg smell) by stirring with a copper rod or racking through a copper "scrubby". Copper converts the the hydrogen sulfide into copper sulfide, which is not soluble in wine. After a few days the wine is racked off the copper sulfide which by that time has precipitated down to the bottom of your vessel. However, putting wine in direct contact with a non-measured amount of copper can result in residual copper being left in your wine, especially in low pH environments.

    A more professional approach to the reduciton of Hydrogen Sulfide is to use a measured amount of copper sulfate in a 1% solution. Normally a trial is set up to determine the least amount needed to eliminate the problem (see FIN84 bench trial kit). Because the amounts used are very small, it will be necessary to use a pipette.

    Add the correct amount of copper sulphate in small .1 ppm doses. Wait several days for the copper sulfide to settle out and then rack off the lees. Do not add copper sulphate during an active fermentation as it may actually cause more hydrogen sulfide to form. If you detect hydrongen sulfide or "rotten egg" smell during fermentation, it is a sign of poor yeast nutrition. Add the recommended amount of Fermaid K (AD345) for the amount of yeast you used to correct this issue - it should keep you from having to use the copper later!

     

    Copper Sulfate (1%) | 1 oz

      Product form

      SKU: FIN80

      $3.99

      Calculating shipping time...
      Shipping
      Free Shipping*
      Shipping
      Paid Shipping
      Drop Ship
      Drop Ship
      Discount Exclusion
      Discount Exclusion
      Freight
      Freight Only
      Pre-book
      Pre Order

        Description

        Some homewinemakers will treat wine affected with Hydrogen Sulfide (rotten egg smell) by stirring with a copper rod or racking through a copper "scrubby". Copper converts the the hydrogen sulfide into copper sulfide, which is not soluble in wine. After a few days the wine is racked off the copper sulfide which by that time has precipitated down to the bottom of your vessel. However, putting wine in direct contact with a non-measured amount of copper can result in residual copper being left in your wine, especially in low pH environments.

        A more professional approach to the reduciton of Hydrogen Sulfide is to use a measured amount of copper sulfate in a 1% solution. Normally a trial is set up to determine the least amount needed to eliminate the problem (see FIN84 bench trial kit). Because the amounts used are very small, it will be necessary to use a pipette.

        Add the correct amount of copper sulphate in small .1 ppm doses. Wait several days for the copper sulfide to settle out and then rack off the lees. Do not add copper sulphate during an active fermentation as it may actually cause more hydrogen sulfide to form. If you detect hydrongen sulfide or "rotten egg" smell during fermentation, it is a sign of poor yeast nutrition. Add the recommended amount of Fermaid K (AD345) for the amount of yeast you used to correct this issue - it should keep you from having to use the copper later!

         

        Documents
        FIN84
        Important Warnings & Shipping Info +
        Shipping Icon
        Free Shipping: Fast & Free Shipping over $79
        Shipping Icon
        Shipping Rates Apply: Bulk items like grain, bottles, and malt are excluded from our free shipping promotion due to their weight, and often dropship items. Standard shipping rates apply and are calculated at checkout based on your location and order size.
        Drop Ship Icon
        Drop Ship: This product will ship directly from the supplier. Delivery may take 1-4 weeks depending on the vendor.
        Discount Exclusion Icon
        Discount Exclusion: This item is not eligible for sitewide price reductions or percentage discounts.
        Freight Icon
        Freight Shipping: This item ships freight only.
        Pre-book Icon
        Pre Order: This item is available for Pre-Order. Full payment is required to reserve stock.
        Shipping Weight: 0.2 lb

        Recently viewed products

        © 2026 MoreWine

          • American Express
          • Apple Pay
          • Bancontact
          • Diners Club
          • Discover
          • Google Pay
          • iDEAL Wero
          • Mastercard
          • Shop Pay
          • USDC
          • Visa

          Login

          Forgot your password?

          Don't have an account yet?
          Create account