Excalibur Chemicals of Swindon supplies chemicals to companies producing a variety of glass products, but is particularly successful with manufacturers of top-quality lead crystal glassware. One product, Top Notch, is a high-active blend of synthetic lubricants and inhibitors, specially formulated to act as a safe, efficient and high-speed coolant for glass fresh out of a furnace. It is both economical to use and free of potentially staining mineral oils. The product has been specifically designed for use in the grinding of glass and ceramics, allowing fine particles generated from work material to fall out of suspension prior to recirculation. Less frequent dressing of grinding wheels is another benefit when Top Notch is applied, thus significantly increasing the equipment's useful working life.