The correlation of reduced surface tension sigma(sc)(*), versus reduced temperature T-sc(*) which produces family of linear curves is investigated for universality. Each curve is characterized by the reduced temperature index T-index(*) which is included in T-SC(*). The correlation is based on phenomenological scaling law and consideration of law of corresponding states. The reduced temperature T-sc(*), scaled distance from the boiling temperature T-b, has the practical advantage of being independent of critical temperature. The correlation is highly accurate when applied to 10 classes of non-polar, slightly polar, polar, and weak electrolyte liquid hydrocarbons. The slopes of linear curves of each class of liquids at given T-index(*)' s are rather constant and a universal regularity, among all liquid is very likely, however small differences identify three classes of non-polar, slightly polar, and polar plus weak electrolytes. Consideration of the pervious application to molten alkali halides, molten salts, and:molten metals, and considering that the reduced surface entropy S-s* = (a sigma(sc)(*)/aT(sc)(*)) is rather constant for all liquid tested, strengthen the idea that sigma(sc)(*)-T-sc(*), correlation is likely universal. (c) 2005 Elsevier B.V. All rights reserved.