PrimoChill Pure Intensified Performance Coolant (32oz.) - Steel Blue As Pure as it can be made with all the protection you have come to trust. Cleanest coolant formulation in the water cooling industry. Just enough of what you need. Designed for the user that wants the best overclocking temps without the need for crazy voodoo additives. Pre-Mixed. Pre-Dyed and Ready to add to your system. Safe on all plastics, rubbers, and miscellaneous gasket materials, including Acrylic. Environmentally responsible food safe NON-TOXIC biodegradable product-good for you, good for your PC, and good for the planet. Specially formulated for high flow pumps, not prone to mechanical sheering and excellent lubrication properties to increase pump life. PrimoChill does NOT use Ethylene Glycol in any fluid. Water Based (not designed for sub zero temps), 2 year shelf life, (unopened)