PrimoChill Ice - Low-Conductive Coolant (32 oz.) - UV Purple Low Conductivity with proper maintenance.* , Pre-Mixed. Pre-Dyed and Ready to add to your system. Designed for the user that wants to fill it and forget it.* Cleanest coolant formulation in the water cooling industry. Just enough of what you need. 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)