New recipes considerably prolong the moist phase so that the pickling spray remain effective.

During the controlled pickling process there is little drying.

At the same time the material surfaces are brightened and show a brilliant optical effect.

The indicator achieves:

1. Controllable spraying
2. Reduction of the emission of poisonous and nitrous gases
3. Cleaning of slightly greasy surfaces
4. Control of reaction (decolorization)