Topbrite 771 Bright Nickel Process Description Application: A highly concentrated brightener to be used in conjunction with Topbrite Additive 221 in controlled quantities, especially for use where quality is of prime concern. The Growel Advantage: The brightener facilitates a contemporary top-of-the-line high-performance process for rack/barrel plating and excels in every trait of Nickel-plating systems. get a quote