Qingdao Tianya Chemical Co Ltd

Accurately weigh 2.4g Sodium Carboxymethyl Cellulose sample (accurate to 0.001g), add 237.6ml distilled water into glass. Disperse the Sodium Carboxymethyl Cellulose sample by a high-speed impeller mill, discontinuously stir to make the sample fully dissolute evenly. Lay for 3 hours. Put it into thermostat water bath with the temperature 25±0.5℃ and keep constant temperature for 30 minutes. Take out. And then determine its absolute viscosity by Brookfield viscometer (DV-II+ type), spindle # 4 (spindle can be replaced according to viscosity), speed 30 rpm.