Activation of All Types of Chlorine Dioxide
Chlorine Dioxide is available in three forms – Liquid Product Activation, Powder Product Activation, and Tablet Product Activation.
Each form contains two components (reagents) that must be activated to generate chlorine dioxide (ClO2) at the point of use. In tablet form, the two reagents are pre-measured, combined, and vacuum-sealed for convenience and stability.
Activation is the process of mixing the two reagents with or without water, allowing them to react and produce optimum chlorine dioxide.
The activation method varies depending on the specific product and is determined by the manufacturer. Instructions typically specify the required amount of water and the necessary activation time to achieve optimum ClO2 generation.
For best results, always follow the manufacturer’s recommended activation guidelines.
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Liquid Product Activation
Liquid chlorine dioxide products consist of two separate reagents that must be mixed in a 1:1 ratio to initiate activation. When combined with a specified quantity of water, the reagents react to generate chlorine dioxide (ClO2) at the required concentration.
The amount of reagent used depends on the desired ClO2 strength and the product’s concentration. The required water volume and activation time are defined by the manufacturer and may vary by product. Activation methods can range from direct mixing without additional water to dilution up to 50 times the total reagent volume. Activation times typically range from 15 minutes to 8 hours.
Example: Livstoc-G / BlueO2
To prepare a 1000 ppm ClO2 solution:
- Mix 20 ml of Reagent A and 20 ml of Reagent B (1:1 ratio)
- Add to a 200 ml bottle
- Cap the bottle and allow it to react for 15 minutes
- The solution is then ready for use, This generated ClO2 solution should be used within 48 hours. Once the bottle is opened, the total generated ClO2 should be used. Store it in shade away from direct sunlight.
Always follow the specific product instructions to ensure safe handling and optimal performance.
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Powder Product Activation
Chlorine dioxide powder products are supplied in pre-measured packs, typically 1 kg (containing 500 g of each reagent). Activation requires mixing the full contents of both powders in 50 liters of water and allowing the solution to react for approximately 3 hours to generate chlorine dioxide (ClO2).
Because the powders are provided in fixed quantities, the entire pack must be activated at one time. This can result in excess prepared solution that may need to be stored for later use.
It is important to note that chlorine dioxide is stable only up to concentrations of approximately 3000 ppm. For safe storage, the activated solution must remain below this concentration. As a result, large storage tanks may be required when preparing bulk volumes.
For example, with a powder product of similar concentration to Livstoc-G, 1 kg of powder is mixed in 50 liters of water and left to react for 3 hours. If only 1 liter is required for immediate application, the remaining 49 liters must be stored.
However, storing activated chlorine dioxide solution is generally not recommended. ClO2 gradually decomposes over time, and its stability is affected by factors such as temperature, light exposure, pressure, concentration, and pH. These factors can reduce effectiveness and compromise performance.
For optimal efficiency and reliability, it is advisable to prepare only the quantity required and follow the manufacturer’s handling and storage guidelines.
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Tablet Product Activation
Chlorine dioxide tablets are designed for convenient, pre-measured activation.
For example, a 10 g tablet formulated to produce 1000 ppm ClO2 should be placed in 1 liter of water and allowed to activate for approximately 3 hours to achieve optimal chlorine dioxide generation. Once fully activated, the solution is ready for application.
When preparing a lower working concentration — such as dosing 1000 liters of water at 1 ppm — the tablet should first be activated separately in the recommended volume of water. The activated solution can then be added to the larger water tank.
Tablets should not be placed directly into large water tanks. Direct addition leads to excessive dilution, which can prevent proper activation and result in incomplete chlorine dioxide generation, reducing overall effectiveness.
For best results, always follow the manufacturer’s activation and dosing instructions.