Zinc plating brightener system for high performance alkaline baths

METASU ZES is a brightener system for barrel-type alkaline baths, formulated to improve productivity, throwing power and brightness at mid to low current density areas.


  • Short processing time made possible by fast plating speed.
  • Excellent throwing power.
  • Attractive luster and good compatibility with chromate.
  • High current density can be used since it does not burn easily.
  • Usage amount is reduced compared to conventional products due to high concentration formulation.
  • Easy handling with possible usage up to 35°C.
  • Wastewater treatment is simple.

Product Specifications


Appearance Colorless – yellow liquid (ZES-M)
Light brown – brown liquid (ZES-G)
Colorless liquid (ZES-R)
Colorless liquid (ZES-U)

Usage conditions (standard)

Item Range Remarks
Composition Zinc 7 – 14g/L
Caustic soda 110 – 150g/L
METASU ZES-M 2 – 8ml/L Wetter
METASU ZES-G 0.2 – 1.0ml/L Brightener
METASU ZES-R 5 – 15ml/L Complexing agent
METASU ZES-U 0 – 4ml/L Brightness booster for low current density areas
Condition Temperature 20 – 35°C
Cathode electric current density 0.4 – 1.5 A/dm2 The maximum cathode current density changes according to the zinc concentration and stirring.
Electric current efficiency 60 – 80% Differs for various current density settings.
Precipitation speed 0.25μm/min
(1A/dm2 )



Inquiry about the product

Feel free to contact us if you have any questions or matters to discuss.