ERSA brass wool dry sponge

When using lead-free solder, there may be increased oxide formation on the surface of the soldering tip, which can very quickly lead to a black non-wettable interface.
ERSA dry sponges use a special spiral wool that effectively removes the passive layers that have built up during dry cleaning.
This increases the service life of the soldering tip.
Dry sponge made of brass wool for the 0A50, 0A52, 0A53, 0A54, 0A55, 0A56, 0A57, 0A58 tip holders and for the 0A08M dry sponge holder.

Why is our dry sponge better than a conventional viscose sponge?
Viscose sponges are slightly moistened for cleaning. Today’s soldering tips consist of different layers of metal. If a temperature shock occurs when cleaning the tip with a damp viscose sponge, the metal layers also expand differently. This can cause micro-cracks on the surface. This leads to increased wear, and if you are now working with lead-free solder, it attacks the vulnerable spots.
Since no thermal shock occurs with the dry sponge, this is the gentler solution.