The corrosion inhibition of Glysofor EVO N is completely free of nitrite, nitrate, borate, phosphate, triazole, and silicate. Glysofor EVO N is used simultaneously as an antifreeze, corrosion protection agent as well as the heat transfer medium. Glysofor EVO N ideally prevents frost damage, corrosion, deposits, sludge accumulation, and biofilms. Glysofor EVO N is biodegradable, environmentally friendly and, in water circuits, exhibits longterm resistance to the formation of biofilms, rot, and microbiological decomposition, which avoids deposition and sludge accumulation. Homogeneous Glysofor EVO N/water mixtures do not separate, which ensures continuous frost resistance. This guarantees year-round, longterm, and low-maintenance operation of the system.