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Available from 30 – 60 mN/m(dyne/cm)

For use in testing the Surface Energy (Dyne Level) of most plastics, composites and other substrates.  Also tests glass for cleanliness.

Most Pens - $21.95 each  (+ freight)


8-Pen Set

8-Pen Set - $125.00  ( 30, 32, 34, 36, 38, 40, 42 & 44) - {46 -60 also available|


To make possible the printing and adherence of polymer plastics, it is inherent that the surface be treated so that the surface tension rises to a defined point.  Example, untreated PE and PP have a surface tension of about 30dynes/cm.  Well-treated PE and PP should reach a value of about 38-42 dynes/cm for printing and adhesion.

Most polymer plastics with a surface tension of less than 37 dyne/cm will have binding difficulties - often recognized in that the tape pull-off test has negative results.

Information on PINK Test Pens:

In order to be able to provide the customer with a quality “non-toxic” ink pens, the PINK testing pens have continued to be developed as follows:

The pens from 30 to 44 mN/m (dyne/cm) are brighter                                                (the observation time here is 4 seconds)

The pens from 45 to 60 mN/m (dyne/cm) are darker                                                   (the observation time here is 2 seconds).
From 45 to 60 mN/m (dyne/cm) in single steps with an accuracy of ± 0.5mN/m (dyne/cm)

The testing pens are not produced according to any DIN/ISO standard. However, the application and handling should be the same as the conditions determined in DIN 53364 or ISO 8296.

The fact that there may be slight variations compared with inks compliant with DIN 53364 or ISO 8296 is known to us depending on the surface to be tested. Different behavior can result from the differences in proportions of polar and dispersed components from those corresponding blue pensdepending on the interaction with the plastic tested.