The Corona Dyne Check Pen is a handy tool used in the printing and packaging industry to measure the surface energy of various materials. Surface energy is crucial in determining how well ink or coatings will adhere to a substrate. The Dyne Check Pen works by applying a liquid solution to the surface of the material. If the solution beads up or does not spread out evenly, it indicates that the surface energy is too low for proper adhesion. This allows operators to adjust surface treatments or processes to ensure optimal print quality and adhesion. The Corona Dyne Check Pen is a simple yet effective tool for quality control in printing and packaging operations.