EN
This paper presents the results of laboratory research on light attenuation (within the light wavelenght from 260nm to 800nm) that was carried out for Western Oder water sampled at three points, from november 1990 till March 1991. At the same time, concentration and size of suspended particles were measured with a microscope. An attempt to interpretate the results of light attenuation measurements as an effect caused by observed suspended matter was made.