It is performed by immersion in a boiling alkaline oxidizing salt solution.
| Product | Application | Working temp. in °C |
| G 19 / G 22 | Alkaline cleaner for hot degreasing prior to blackening. | 60-80 |
| BEIZENTFETTER | For descaling prior to blackening. Has some degreasing properties. | RT |
| FERROBLACK® MH | Blackening salts containing special additives for a wide range of application. | 140 APPROX |
| FERROBLACK® HL | Particularly suitable for parts with copper coatings and brazed joints | 140 APPROX |
| STREICH-BRÜNIERBEIZE | A fluid product for brushing on or immersion. Ideal for repairs and hobby use. | RT |
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