Tesch Chemical Company has set the standard for band instrument cleaning and is making a commitment to provide band instrument repair technicians with a complete line of low fuming health conscious, superior products. They clean without harm to metal or protective surfaces and are formulated to work on brass, nickel, silver, bronze, and copper. Tesch has a long standing reputation within the Band Instrument Repair industry. For more than 20 years, repair shops have used and trusted their brass cleaners; co-developed by Ken Skitch, a well respected Master Repair Technician, and Tesch Chemical Company.