Felder brand, original from Germany.

"ISO 9001 - quality assurance

Our lab for product research and quality control!

FELDER GMBH is an innovative company that specializes in soldering technology. Using the latest production processes, we guarantee a high and consistent quality for our solders and fluxes.

All FELDER products are subject to continuous quality control by our lab and are manufactured according to ISO 9001:2000 standards. " 

Fluxes for brass hard solder pickling agent, this universal hard solder powder is for soldering of copper, copper base alloy, and steel as well as welding of brass.

According to DIN EN 1044-FH21

To be used in combination with hard solders that have working temperatures higher than  800°C