Magic Green ultrasonic cleaner concentrate, industrial use and strength. We are selling 2 ounces of powder concentrate which will make 1 to 2 gallons of cleaner depending on how strong you mix it. Just add water. This is hands down our favorite jewelry cleaning solution. It is professional quality and strength and used by jewelers around the world. It is only sold in quantities reasonable for professional use, so we are repackaging 2 ounce quantities for personal or trial use. Manufacturers instructions are to mix 1 to 3 ounces of powder per gallon of water depending on desired concentration, we use 2 ounces (which will make 1 gallon with the quantity supplied). Get an empty 1 gallon milk jug, dump the powder in and fill with water. If you don't have an ultrasonic cleaner it works well for soaking your jewelry in also. Soak in solution, scrub with a toothbrush and rinse under the faucet. Safe for gold, stainless steel and precious stones. Completely biodegradable with no ammonia and it is non hazmat. Made in the USA. Satisfaction guaranteed. *Note that this is not a silver tarnish remover. If your silver is tarnished, you need to polish it.