Houghton is the world leader in heat treatment technology and application expertise across a wide range of industries. We supply pre-treatment cleaners, cold quenching oils, martempering oils, aqueous quenchants, and final cleaning and temper rust protection. Also featuring the GREENLIGHTTM Andon Fluid Monitor is a completely self-contained measurement system which sets the new standard for continuous concentration monitoring of metalworking fluids such as aqueous quenchants for heat treatment applications. www.houghtonintl.com