When using a penny stopper, place it between two fingers and remove it.
	Keep the stopper help in your hand between your fingers.  Setting it down on the table could cause both the chemical to become contaminated and also leave the liquid on the table.
	Use an eyedropper to take what you need from the bottle and put it into a graduated cylinder for measuring. Using  an eyedropper will prevent spilling and help you to control the amount of liquid you are taking more precisely.
	Pour the liquid from the graduated cylinder down a glass stirring rod to help control the flow and prevent spillage and splashing.