Koolance Low-Conductivity Liquid Coolant, 700ml, Clear Koolance 705 series coolant is used by many industries requiring a low conductivity (3 microSiemens per centimeter), low-toxicity, reliable coolant with corrosion and biological inhibitors. A high quality coolant is extremely important for addressing dissimilar metals and biologic growth (bacterial and algae) long-term. Koolance liquids will not clog components and can typically be used for 2-3 years before replacement is recommended. This container includes 700ml (24 fl oz) of prediluted coolant and can function as a squirt bottle for convenient reservoir filling. It's recommended to replace the coolant every 2-3 years, or immediately if there is any change in color or clarity.