EK-CryoFuel contains synergistic corrosion inhibitors to protect metals commonly found in computer liquid cooling systems. It has been tested according to BS5117 (ASTM D1384) and meets the corrosion standards for copper, brass, aluminum, and stainless steel. The coolant contains everything a high-end liquid cooling system needs for efficient thermal performance and the necessary protection for your water blocks. All EK-CryoFuel mixtures are biodegradable (90% within a 10-day period) and do not persist in the environment or cause bioaccumulation. EK-CryoFuel offers a shelf life of 2 years from the date of filling.