Test Pens

The test pens contain, similar to the test inks, fluids of defined surface tension. The surface energy of the material to be checked is determined simply by applying a stroke of ink with the tip of the felt pen. The accuracy of the measurement is, like the one of the test inks, ± 1 mN/m (dyne/cm).

The test pens are available in a set of 8 pens from 30 to 44 mN/m (dyne/cm). On special demand also higher or smaller values are available.

• Possibility of quick measurements with high accuracy
• No spilling
• Extremely easy to handle
• Minimum consumption of test fluid
• Long shelf-life if cap is kept closed properly