TL-690 environmentally friendly trivalent chromium passivation agent color of this product is suitable for color passivation of zinc coating agent, passivation film bright, beautiful, excellent corrosion resistance, is environmentally friendly products, eliminating the production process of hexavalent chromium pollution, but also to meet the product needs no hexavalent chromium, in line with the European Union and the United States GMF0025 and GMW3044 standards. No heat, solution stability, long life, easy to operate. Up to 120 hours salt spray test. First, the use of technology: TL-690 color trivalent chromium passivation agent, 8-10% (by volume) PH value of 2.5-3.5 times the optimum value of 3.0 30-50 seconds dipping temperature 25-35 degrees two processes: Galvanized - water - light - (3% -5% of dilute nitric acid) - washing - passive - water - hot water - hot air drying three. Maintenance: solution in the course of PH value will gradually increase, adjusted diluted nitric acid PH application to process range. If the PH value is too low, caustic soda solution can be diluted to increase the PH value. If the color is not enough, need additional TL-690 color trivalent chromium passivation agent. Four. Adjust passivation solution: 1. passivation solution during use, PH value increased gradually adjust to the diluted nitric acid application within the 2.5-3.5 range. 2. add less spare passivation solution, generally handle one square meter piece, need to fill 40-60ml passivation solution. Five. Notes: 1. This product must be used to adjust PH value of nitrate. 2. passivation solution configured before use PH value should be measured to ensure that within the process, new bath with a good PH value is generally around 3.0. 3. The thickness of the coating takes up to 8 microns or more, in order to ensure its corrosion resistance. The passivation process should continue to shake the parts to make it uniform passive film. Changzhou high resistance to high salt spray Man New Chemical Materials multicolored trivalent chromium passivation agent Gogh fog iridescent trivalent chromium passivation agent * 120 hours of salt spray multicolored trivalent chromium passivation agent * 120 hours of salt spray high trivalent chromium iridescent passivation agent Changzhou High Nyman New Chemical Materials Co., Ltd. High salt spray trivalent chromium passivation agent multicolored Changzhou high resistance to high salt spray Man New Chemical Materials multicolored trivalent chromium passivation agent Gogh trivalent chromium salt spray Rainbow color deactivator · 120 hours of salt spray multicolored trivalent chromium passivation agent · 120 hours of salt spray high iridescent trivalent chromium passivation agent Changzhou High Nyman New Chemical Materials Co., Ltd. High salt spray trivalent chromium passivation agent multicolored Changzhou high resistance to high salt spray Man New Chemical Materials multicolored trivalent chromium passivation agent Gogh fog iridescent trivalent chromium passivation agent * 120 hours of salt spray multicolored trivalent chromium passivation agent * 120 hours of salt spray high trivalent chromium iridescent passivation agent Changzhou High Nyman New Chemical Materials Co., Ltd. High salt spray trivalent chromium passivation agent multicolored Changzhou high resistance to high salt spray Man New Chemical Materials multicolored trivalent chromium passivation agent Gogh trivalent chromium salt spray Rainbow color deactivator · 120 hours of salt spray multicolored trivalent chromium passivation agent · 120 hours of salt spray high iridescent trivalent chromium passivation agent Changzhou High Nyman New Chemical Materials Co., Ltd. High salt spray trivalent chromium passivation agent multicolored