he Kolorguide Dyne Professional Testing Markers are essential for ensuring surface readiness across a variety of industries, including plastics, printing, glass, and aluminum. This pack of 12 precision pens accurately measures surface tension from 30 to 52 dynes/cm, making them ideal for coating, laminating, and printing applications. Perfect for assessing adhesion on films, plastics, glass, and metal surfaces, these markers provide reliable, fast results, helping professionals optimize bonding processes and maintain quality control in their production workflows.