Abstract: A method of neutralizing the electrostatic forces in liquids or solutions in liquid phase, preferably blood and blood solutions, respectively. The electrostatic forces primarily consist of surface tension and interrepellant forces between particles in the solution.The purpose of the invention is obtained by adding polypropylene glycol H[OCH(CH.sub.3)CH.sub.2 ].sub.n OH to the liquid or solution. Polypropylene glycol possesses properties allowing it to neutralize the electrostatic forces without affecting the red blood cells.