PROCEDURE. (a) Dissolve potassium n

PROCEDURE. (a) Dissolve potassium nitrate in water using a ratio of three parts weight of water to one part nitrate. (b) In a second container, dry mix the powdered charcoal and sulpher by stirring with a wooden stick or rotating in a tightly closed container. (c) Add a few drops of potassium nitrate solution to the dry mixture and blend to obtain a thoroughly wet paste. Then add the rest of the solution and stir. (d) Pour the mixture into a shallow dish or pan and allow to stand until it evaporates to a paste-like consistency. Mix the paste thoroughly with a wooden stick to assure uniformity and set aside for further drying. (e) When the mixture is nearly dried, granulate by forcing through a piece of wire screening. The granules are then spread thinly and allowed to dry.