Test the surface energy (dyne level) of film and other nonabsorbent surfaces before printing, coating, or laminating. A continuous line will appear if the material meets the tester's surface energy level, while insufficiently treated material results in air bubbles and a disappearing mark.

Bottles contain a solution that should be applied with a cotton swab.

Pens work similar to a felt-tip marker. They’re also called dyne pens.

Assortments contain pens with six different dyne levels. Use them if you’re unsure of the correct surface energy of an item. The pens in this assortment are more precise and apply the solution more consistently than the individual pens.