The curative mud from Atanasovsko lake is characterized as moderately sulphide, highly mineralized, containing high concentrations of magnesium ions, sulphates, chlorides, hydrocarbons, sodium ions, iodides, bromides, calcium, with alkaline reaction. The healing mud has excellent physical properties.

Physicо-chemical parameters: pH 7,31 , Humidity 64,52 %, Pollution (particles > 0,25 mm) 2,78 %, Volume of sludge 4,9 sm3/100g, Relative weight 1,31 , Hydrogen sulphide (H2S) 1,1 g/kg, Degree of swelling 1,4 , Heat capacity 0,7178 Cal

Physicо-chemical parameters (liquid phase): pH 8,28 , Bromide (Br-) 97,2 g/kg, Calcium (Ca2+) 0,426 g/kg, Magnesium (Mg2+) 4,13 g/kg, Mineralization 74,8 g/kg, Sodium (Na+) 24,19 g/kg, Sulfate (SO4 2-) 6,38 g/kg, Hydrocarbonate (HCO3-) 2,285 g/kg, Chloride (Cl -) 40,64 g/kg