Tin plating brighteners for sulfuric acid bath

METASU SNV-200A1/B1 is a borofluoride-free tin plating brightener.

・Suitable for pure tin.
・Superior luster throwing power, and can be used for barrel and rack plating.
・Able to obtain a high lustrous coating over a broad range of electric current density.
・Does not contain borofluoride compounds or formalin.
・Can also be used as an organic acid tin plating brightener

Product specifications

Usage conditions (standard)

Item Bath makeup concentration Concentration for monitoring
Composition 98% sulfuric acid 184 g/L 100-250 g/L
Stannous sulfate
(Tin metal)
20 g/L
(11 g/L)
15-25 g/L
(8-13 g/L)
METASU SNV-200A1 30 ml/L 25-35 ml/L
METASU SNV-200B1 1 ml/L 0.5-1.5 ml/L
Condition Bath temperature 20℃ (10-25℃)
Electric current density 0.2-4 A/dm2
Anode High purity tin (99.99% and above is recommended)
Agitation Pump circulation, material set in motion
Filtration Continuous filtration by filter with thickness 1-5um

* Conditions can be set accordingly to match the usage method.

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