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How to make CDS using the jar method?

Important Warning The production and use of chlorine dioxide (CDS) require strict precautions. It is essential to handle substances in a well-ventilated environment, with adequate protection (gloves, safety glasses, mask). Chlorine dioxide is a powerful chemical that can pose health risks if handled improperly.   Find all the necessary equipment for producing your CDS with the jar method on our website.   Discover the kit!   Required materials To make CDS using the JAR method, you will need: • An airtight glass jar (like a preserving jar) • A small glass • Low-mineralized water or distilled water (quantity varies depending on desired dosage) • Hydrochloric acid (HCl) at 4%  • Sodium chlorite (NaClO2) at 25% • A cup or a graduated syringe for precise dosing • A well-ventilated area away from any heat source • Gloves and safety glasses   Dosage The quantities of distilled water and reagents vary depending on the concentration and amount of CDS you wish to obtain. Please refer to the dosage chart to adjust the proportions precisely. The dosages given here are for informational purposes only and should be adapted to your needs.   How to dose reagents?     What is CDS? CDS (Chlorine Dioxide Solution) is a solution that contains only chlorine dioxide gas dissolved in distilled water. It is essential that the reagents (sodium chlorite and hydrochloric acid) are never mixed directly with the distilled water in the jar. If the reagents come into contact with the water, it would result in a solution containing reagents, which is not CDS. Chlorine dioxide gas must be generated separately and dissolved in the water to obtain the CDS solution.   Step-by-step procedure   CDS manufacturing diagram Jar Method   1. Jar preparation • Fill the jar with the amount of water corresponding to your dosage. • Place the small glass inside the jar.   2. Preparing the reactive mixture • In the small glass, first add 25% sodium chlorite. • Then, gently add 4% hydrochloric acid to the cup, but never let these reagents come into contact with the water in the jar. They should only interact with each other in the small glass, not in the water.   3. Chlorine dioxide formation • Immediately seal the jar tightly. Chlorine dioxide gas is released into the small glass and slowly dissolves into the water in the jar.   4. First saturation (approx. 24 hours) • Leave to act for 24 hours at room temperature in a dark place.   5. Refrigeration after first saturation • After 24 hours at room temperature, place the jar in the refrigerator. • Check that the color of the cup and the water in the jar become identical. This means that the reaction is complete and the chlorine dioxide is properly dissolved in the water.   6. Second saturation (approx. 24 hours) • Once the color is consistent between the small glass and the liquid in the jar, discard the contents of the cup and prepare a new reactive mixture with the same proportions. • Seal the jar tightly again and leave to act for another 24 hours. • Repeat the same check: after 24 hours, put the jar in the refrigerator and wait for the color of the small glass and the water in the jar to be identical.   7. Filtration and storage • Once the time for the second saturation has elapsed, open the jar carefully. • Transfer the resulting solution into an amber glass bottle with an airtight stopper. • Store the solution in the refrigerator.   Precautions and storage • Safe handling: Never directly inhale chlorine dioxide vapors. • Storage: Keep the solution in a dark glass container, cool, refrigerated and away from light.   Note This guide is provided for informational purposes only. All handling is your responsibility. Make sure to comply with all necessary safety standards. This method involves risks and dangers. We are absolutely not responsible for improper execution of this method, and you must take all necessary precautions to ensure your safety.   View all products!