The elimination of corrosion in a cooling medium system can be achieved by using:

Using glycol as a cooling medium can effectively eliminate corrosion within a cooling system. Glycol, particularly ethylene glycol or propylene glycol, serves as an antifreeze agent and has desirable properties that inhibit the chemical reactions leading to corrosion. Its use helps maintain the integrity of metal components by forming a protective layer on surfaces, thereby reducing the potential for rust and degradation that may occur in metal piping and fittings.

In contrast, salt brine can contribute to corrosion due to its high salt content, which is known to accelerate deterioration of metal surfaces. Water, although it may appear to be a neutral solution, is also corrosive over time, especially in the presence of oxygen and other impurities. Ammonia can be corrosive in certain environments as well and may react negatively with moisture, leading to additional corrosion problems. Therefore, glycol stands out as the preferred option to eliminate corrosion in a cooling medium system.