GB PREMIUM UNIBIO® SE 46 is a synthetic biodegradable hydraulic fluid, developed using specially selected additives and synthetic esters, for use in hydraulic plant and equipment operating under severe mechanical conditions and high operating temperatures. Developed to replace mineral oils in environmentally sensitive applications, it can be used in a wide variety of fixed and mobile plant applications, such as forestry, water management, inland water ways, dockyards, agriculture, construction, quarrying, refuse collection, landfill, water treatment, road building, railroads and mining.