Difference between CDH and CDL?

Difference between CDH and CDL?

Some customers ask me what the difference between CDH and “CDL” would be. I’ll try to explain it here.

CDH is activated by the combination of water, sodium chlorite 25% and hydrochloric acid 4% in a closed bottle. The result is a chlorine dioxide solution < 0.3%. CDH is the abbreviation for Chlordioxid Haltbar.

In the so-called “CDL” solutions, the chlorine dioxide gas is generally activated outside the water of sodium chlorite 25% and an acid and then introduced into it. However, the procedure is not laid down anywhere and is also not a definition. This is because the abbreviation “CDL” stands for the term Chlordioxid solution. In other words, chlorine dioxide, which is bound to water. Whether the method of production makes a difference cannot be distinguished with regard to the term chlorine dioxide solution. From a chemical point of view, however, both are chlorine dioxide solutions.

A special feature of the shelf life of original CDH3000 refers in particular to the bottle. It is a dosing system bottle made of amber glass, which is equipped with a dosing insert. Basically, hardly any chlorine dioxide can escape from this during extraction. If the chlorine dioxide gas can hardly escape, the solution lasts longer. In addition, the removal and measurement of CDH3000 is very easy with the doser (a dosing syringe that fits exactly into the bottle insert). Even if a chlorine dioxide solution is cooled below 11 °C, chlorine dioxide gas can be released. Even if the loss is then much lower. Customers confirm that CDH3000 has a very good effect compared to the so-called “CDL”.

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