Widest range of Dyne Pens available for next day delivery in the UK.

  • Dyne Test Pens
  • Standard set of Dyne test pens
  • Dyne test pen - valve tip applicator
  • Dyne test pens - valve tip applicator

A complete range of Dyne Test Pens available from Dyne Testing to measure surface energy and surface tension. Using a Dyne pen gives quick and easy results indicating surface wettability. 

The low surface energy of polymer-based substrates often leads to poor adhesion of inks, glues and coatings. To obtain optimum adhesion, it is necessary to increase the surface energy of the substrate to just above that of the material to be applied. Surface Treatment with either Corona or Plasma results in good wetting of the material over the surface of the substrate and so improves adhesion. For optimum adhesion when printing, gluing or coating on various substrates, it is necessary to obtain a high surface energy. Measuring surface energy can be achieved by measuring contact angle or by use of Surface Energy Test Pens sometimes referred to as Sherman pens, corona test pens, corona pens or surface tension pens and are used for surface energy testing. The fluid contained within dyne pens is based on the ISO 8296 method for measuring the surface energy of polyethylene film. When the Dyne level test pen is applied to the surface, the liquid will either form a continuous film on the surface or pull back into small droplets. If the Dyne test fluid remains as a film for 3 seconds, the substrate will have a minimum surface energy of that ink value, expressed in mN/m (Dynes). Should the Dyne test liquid reticulate or draw back into droplets in less than 1 second then the surface energy of the substrate is lower than that of the liquid itself. The exact surface energy (Dyne level) can be determined by applying a range of increasing or decreasing values of Dyne test pens.

Our Dyne Testing pens are based on a valve tip applicator and not the "Magic Marker", "Felt Tip" or Jumbe pens. The Valve Tip Applicator principle is simple: Keep the testing part of the pen away from the fluid storage part of the pen (in other words, you get no wicking of contaminates from the substrate into the test fluid reservoir ). By pressing the tip firmly down the valve is opened and fresh fluid floods the tip; this flushes it clean, and allows the tester to lightly pass over the sample to accurately determine dyne level. Results are based on how long the test solution takes to form beads on the sample surface.

Dyne Pens are available in all values from 30 to 70 mN/m and are supplied in disposable pens and are available in a range of pack sizes: -


  Quantity per pack: 16 Pens

  Values: 30,32,34,36,38,40,42,44,46,48,

  50,52,54,56,58 & 60mN/m


  Quantity per pack: 12 Pens

  Values: 30,34,36,38,40,42,44,46,48,      

  50,54 & 58mN/m                       


  Quantity per pack: 9 Pens

  30,34,38,40,42,46,50,54 & 58mN/m


  Quantity per pack: 6 Pens

  36,40,44,48,52 & 56mN/m


  Quantity per pack: 6 Pens

  38,38,42,42,44 & 44mN/m


  Quantity per pack: 6 Pens

  34,34,38,38,42 & 42mN/m


Dyne Testing aim to ship the Dyne test pens within 24 hours of receipt of purchase order if we have them in stock for customers in mainland UK & Ireland depending on customer payment terms.

Recent customer testimonial "Just received the pens this morning. Thank you very much for the ultra fast turnaround, this is great!"

Click to read our eBook: Surface Energy Testing

Clients using Dyne Technology