hydroxide and cuprammonium hydroxide the dissolved cellulose is sucked up an ostwald viscometer and the time taken for it to flow between the two measured points is recorded and the viscosity calculated from the specific viscometer coefficient cuprammonium solution aqueous solution of 164 g l ammonia and 23 9 g l copper the pulp was disintegrated into a fluff using a mechanical disintegrator or a waring blender a moisture determination was done of the disintegrated pulp sample by drying exactly 10 g of pulp at 125 135 u00b0 c for 1 hour from the value obtained the amount of pulp equivalent to exactly 1 g of dry pulp was calculated using equation 1 this calculated quantity of air dried pulp was weighed out and placed into a 100 ml bottle the bottle is to be clean and dry having been in a drying oven and subsequently cooled 15 ml of 1n naoh was dispensed thoroughly wetting the pulp 85 ml of cuprammonium was dispensed into the bottle the air gap between the solution and stopper was minimised by suitably insoluble objects placed in the bottle the bottle was then stoppered and placed in a mechanical shaker for a minimum of 45 minutes the bottle was then transferred to a thermostat controlled water bath at precisely 20 u00b0 c and allowed to stand for 1 hour 60 minutes to ensure that the temperature of the solution was 20 u00b0 c the solution was sucked up into the 25 ml ostwald viscometer which was enclosed in a water jacket through which water at 20 u00b0 c u00b1 1 u00b0 c was passed as the solution flowed out of the viscometer capillary a stopwatch was used to.