The specific surface area of 6 ICCS fibers, B-26, C-36, D-5, E-4, G-17 and I-26 was measured by means of methylene blue adsorption in liquid phase. The adsorption isotherm was hold at 25°C and during 24 hours. The concentration of methylene blue was in the range 0.004 - 0.18 g l^-1 for each isotherm. The surface area of these standard cottons were found 32.32, 32.42, 34.48, 52.72, 43.96 and 29.91 m² g^-1 respectively. Physical properties of these cottons such as crystallinity (determined by X-ray diffractoin) and fineness (measured by gravimetric method, FMT 3 and AFIS) were measured in order to establish the relationships between the surface areas of six standard cottons and their physical properties.