The colorfast ink pen is used for indicating the year a queen is introduced to a hive by marking the back of the queen. Marking a queen helps you to locate her so that you can safely transfer resources to other hives. You can also confirm that she has not been replaced. The Queen Marking Tube is a safe and efficient way to mark queens. When using the Queen Marking Tube, place the queen in the tube and gently confine her against the plastic screen with the sponge plunger. Once she is confined against the plastic screen, gently mark her thorax with the queen marking pen.
There is a purpose to the color used to mark a queen! While you can purchase whatever color you wish, beekeepers use the following colors to track the age of their queens.