Surface tension is perpendicular force acting per uint length of an imaginary line stretched on the surface of a liquid. Therefore, SI units will be N/m, since the value of surface tension for all liquids is very low therefore it is commonly mentioned as mN/m. Dimensions formula for surface tension will be MT-2. read more
where γ sw is the surface tension of seawater in mN/m, γ w is the surface tension of water in mN/m, S is the reference salinity in g/kg, and t is temperature in degrees Celsius. The average absolute percentage deviation between measurements and the correlation was 0.19% while the maximum deviation is 0.60%. read more