Sentinel 369 Ultimate Cleaner & Degreaser is the ultimate in cleaning and degreasing technology. Sentinel 369 is a concentrated biodegradable alkaline cleaner and degreaser. With a proprietary blend surfactants and emulsifying agents Sentinel 369 is ideal for removing and suspending large soils and small particulate creating this powerful cleaner. Sentinel 369 properties include, no free alkalinity, no glycol ethers and is free rinsing. Sentinel 369 is non-etching cleaner safe to use on most metals. Sentinel 369 is available with a lemon/ lime scent and undiluted pH of 11.75.