(i) Liquid content: It contains 90%-92% water.
(ii) Inert matter: It contains 9% inert matter.
(iii) Gaseous substances: Gaseous substances are- O2, CO2, N2 etc.
(iv) Minerals: Sodium, Potassium, Calcium, Magnesium, Iron etc.
(v) Ions: Na+, K+, Ca++, Cl-, HCO3-, HPO4- etc.