EuroSonic concentrate exclusively from Eurotol is an advanced technology, bio-friendly ultrasonic cleaning solution containing thousands of enzymes which will remove body oils, debris, rouges and grime accumulations from metals, stones and other materials. You have seen biodegradable cleaners before which lack the cleaning power of good old ammonia. Trust us on this one, EuroSonic contains no phenols, ammonia, sulphur or nitrites and is non-toxic, bio-degradable and requires no hazardous shipping. Our best cleaner - SDS approved. Try it. It really works! Mixes 30 to 1.