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  • Free SO2 Testing


    Sulfur Dioxide (SO2) is one of the most important and effective chemical tools in winemaking. It inhibits spoilage, molds and bacteria, and is a highly effective antioxidant, for which there is currently no suitable substitute.

     

    We carry all the equipment and reagents needed to conduct free sulfur dioxide (SO2) testing to confirm you are maintaining the necessary levels of free SO2 in your wine, whether you prefer to use fast and economical but less precise Free SO2 Test Titrets, traditional Aeration Oxidation testing, or convenient and accurate, but more expensive, digital SO2 testing meters.

     

    A very quick, reasonably accurate, and economical alternative is the Free SO2 Test Titret, although these kits have a shorter shelf life than aeration oxidation reagents.  This method is a good choice for most home winemakers.

     

    Many winemakers believe aeration oxidation is the most accurate way to test, but that method does require a laboratory apparatus set-up and some simple lab skills. See our Testing Free SO2 by Aeration Oxidation instructions for more information.

     

    Another very quick, very accurate method is to use digital SO2 test meters by Vinmetrica or Hanna Instruments.  These have great advantages and convenience but are also the most expensive.  

    Free SO2 Test Titrettes | Wine making Supplies

    Free SO2 Test Titrets

    Free SO2 Test Titrets
    Average rating:
    $17.99
    Vinmetrica SC-300 SO2 & pH/TA Pro Analyzer Kit | Wine making Supplies

    Vinmetrica SC-300 SO2 & pH/TA Pro Analyzer Kit

    Vinmetrica SC-300 SO2 & pH/TA Pro Analyzer Kit
    Average rating:
    $748.99
    Reagent Refill: (Sulfite) SO2 (for Vinmetrica SC-100 and SC-300 Analyzers) | Commercial Wine making Supplies

    Reagent Refill: (Sulfite) SO2 (for Vinmetrica SC-100 and SC-300 Analyzers)

    Reagent Refill: (Sulfite) SO2 (for Vinmetrica SC-100 and SC-300 Analyzers)
    Average rating:
    $52.99
    Flow Meter | Wine making Supplies

    Flow Meter

    $105.99
    Plastic Rinse Bottle for cleaning wine making equipment | Winemaking Supplies

    Plastic Rinse Bottle

    Plastic Rinse Bottle
    Average rating:
    $4.99
    Aeration Oxidation Apparatus replacement Impinger complete unit | Wine making Supplies

    Impinger Unit

    $78.99
    Impinger Replacement Bottom Sulfur Dioxide SO2 Wine Testing: Winemaking Supplies

    Impinger Replacement Bottom

    Impinger Replacement Bottom
    Average rating:
    $37.99
    Phosphoric Acid: 25% solution for Free SO2 Testing | Wine making Supplies

    Phosphoric Acid: 25% solution (for AOF)

    Phosphoric Acid: 25% solution (for AOF)
    Average rating:
    Starting from $10.99
    Sodium Hydroxide (N/10 solution) for use in total acid titrations | Wine making Testing Supplies

    Sodium Hydroxide 0.1N (N/10 solution) for Acid Titration

    Sodium Hydroxide 0.1N (N/10 solution) for Acid Titration
    Average rating:
    Starting from $11.99
    SO2 Indicator Solution for Acid and pH wine testing | Winemaking Supplies

    SO2 Indicator Solution: 1oz Bottle

    SO2 Indicator Solution: 1oz Bottle
    Average rating:
    $5.99