The procedure above seems to be missing a very important number somewhere. When you instruct to "fill to 3/4 full" -3/4 of WHAT? A cup? A liter? I only know so far I am starting with 125 g. Potassium Iodide and a glass container of unknown size......
And where it says "add enough water so that there is a good layer of crystals still in the bottom of the container" - could you give me an appoximate?? Maybe you have done this so long that it is easy for you and sometimes when this is the case it may be difficult to see why anything vague in directions might be a problem for someone else. I am so appreciative here - not obtuse, just wanting to be careful and not waste.