This standard specifies the method principle, reagents, instruments, analysis steps and calculation of analysis results using potentiometric titration to determine the sulfuric acid (ρ1.84g/ml) content in zinc electroplating and cadmium electroplating triacid passivation solutions. This standard is applicable to the determination of sulfuric acid content in tri-acid passivation solutions for zinc electroplating and cadmium electroplating. Measuring range: 10~30g/L.
HB/Z 5109.4-2001 history
2001HB/Z 5109.1-2001 Analysis method for passivation solution Determination of sodium bichromate content in zinc plating, cadmium plating diacid passivation solution through potentiometric titration