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Every day, around the world people are working in research laboratories on new formulations for chemical, pharmaceutical, cosmetic, food and agricultural industries. They have to one’s disposal millions of row materials. The surfactants used for compose this formulations are characterised by various physical properties, for example: surfactant load, HLB - Hydrophilic-Lipophilic Balance, contact angle, surface tension. It is very important to select right substances with properties we are looking for. Informations given by manufactures in technical data sheets are very helpful. Especially, thanks to knowledge of HLB factor’s value we can make easy this selection. This factor very fast categorizes and shows the properties of researched materials.