This standard specifies the method principle, reagents, instruments, analysis steps and calculation of analysis results for the determination of chromium trioxide content in electroplating zinc and cadmium electroplating triacid passivation solutions using potentiometric titration. This standard is applicable to the determination of chromium trioxide content in tri-acid passivation solutions for zinc electroplating and cadmium electroplating. Measuring range: 80~170g/L.
HB/Z 5109.3-2001 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