Soluble anodes have many disadvantages across different plating applications. Lead anodes are heavy, increase voltage as they dissolve and leave a toxic residue in your tank and possibly your plated finish. Titanium baskets with metal nuggets must be maintained which is an ergonomic issue for operators, have wide swings in metal bath concentration and have limits in current density and operating range. De Nora mixed metal oxide anodes.
The one disadvantage to insoluble anodes is that, unlike titanium baskets, the metal ion being plated must be fed into the plating bath. Some customers overcome this by simply adding the metal to the bath directly. De Nora also offers a metal dissolution system which is separate from the plating tank. In this way, the metal ion can be metered into the plating bath in a very controlled manner which allows tight control (within 5%) to a specified bath concentration while eliminating operator ergonomic issues.