(3) SLOWLY add approximately 5 grams of the poly(vinyl alcohol) over about 30 minutes with sporadic stirring. Use sporadic stirring to avoid frothing. (Be sure to record the weight you added.) Add the polymer slowly; it may not all dissolve, but try to add it so as not to produce agglomerate or frothing. When the solution is clear (which may take perhaps an hour), the polymer has all dissolved.