Antifreeze, thermal and anticorrosive liquid. It is added to the closed circuit of the solar water heater and prevents the extreme phases of the water from occurring (i.e. it prevents the formation of ice in winter and boiling in summer).

The solar water heater is kept in excellent condition throughout the year (water temperatures from -51°C to +105°C) if the material is added intact.

It contains anticorrosive and preservative additives so that the closed circuit of the solar water heater does not corrode.