This is a very effective cleaner and brightener, and a real plus is that it ships normally; all other electrocleaners that I'm aware of require expensive hazardous materials shipping. I use it on Argentium 960 for every piece that I produce - the bulk of my work. This has been found to enhance Argentium silver's tarnish resistance. I use six volts for 75 seconds. I just discovered that this can also be used in the ultrasonic, but I love the Ottosonic Cleaner (123.616) which I buy by the gallon and doubt that I will change using that in the ultrasonic cleaner prior to electrocleaning.