Tourmaline Brünierung für Kupfer, Ms, Bz 5 KG

Tourmaline is used for browning brass and copper. The process is odorless, can be done at room temperature and you do not get black fingers. The burnishing process can be stopped at any time. You can use Tourmaline undiluted or diluted 1:3 to 1:5 with tap water to prepare a burnishing bath. To be sure that the surface is free of acids, the draining water should be tested for neutrality with an indicator paper. Download – Product Information: here (https://www.meturgen.at/wp-content/uploads/2021/05/tourmaline_bruenierung_ENG.pdf)