3. Cut the sticks to a uniform length (approx. 3 cm), blot dry, and weigh each group of three sticks to 0.01 g. The group should be in the range of 3 grams. Record the weight in the laboratory record in a table according to their respective solutions. Be careful to keep track of which sticks are to go into each solution! Record the data with equal caution! 4. Place the sticks into their assigned solutions for 20 minutes. Occasionally and regularly swirl the covered cups during this incubation period.