Science and Education Publishing Journal of Polymer and Biopolymer Physics Chemistry ISSN Pending 1 1 2013 11 22 Dextrans in Aqueous Solution. Experimental Review on Intrinsic Viscosity Measurements and Temperature Effect 13 21 EN Martin Alberto Masuelli Instituto de Física Aplicada, CONICET. Cátedra de Química Física II, Área de Química Física JPBPC2013113 10.12691/jpbpc-1-1-3 2013 09 18 2013 10 23 2013 11 22 The study of biopolymers as dextran in aqueous solution, is effectively determined by intrinsic viscosity [] measurements at different temperatures. Molecular weight (Mv) and hydrodynamic properties can be calculated from there. The Mark-Houwink parameters indicate the dependence with temperature (T) in the range from 20 to 50ºC, ie with increasing T a increases and kM-H decreases. These hydrodynamic parameters show that these polysaccharides behave as a compact rigid sphere and contract by the increase of temperature (RH decreases) for the Mw range from 8.8 to 200kDa.