The chamber is a lined space with one of the best ingredients in the world (96.6% pure salt). The excellent healing power of the salt in Praid lies in the purity of the salt. The salt is highly rich in high dispersion sodium chloride and is formed by a dry aerosol with an active ingredient of 1 to 3 mg in air. The drug can also reach the smallest bronchi. The most important factor in the healing of the salt chamber is the effect on the mucous membranes of the respiratory system and the smooth muscles of the bronchi.