Surface Tension Checkers - Senze-Instruments

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Graphic & Printing Industry > Ink properties > Surface tension

Measuring surface tension
Surface tension is an essential point for adhesion in printing, sticking process on plastic, metallic, and generally all non porous materials.The control test pens and inks allow an accurate and quick determination of surface tension in dyne/cm (mN/m).

  • To avoid inacurracy: temperature to stock between 10 and 25°C.

  • Temperature correction : around – 1 dyne / + 10 ° C (regarding 20 °C ambiant)

  • Avoid the contact with eyes, and skin (toxic, dangerous).


The ECO JUMBO
The ECO JUMBO test pens contain 45 mL of ECO ink.
Their composition has been studied to get the same comportmental effect as the formamide ink.
The ECO JUMBO are designed with reservoir and released valves.
These systems allow to use a virgin ink for each application.

  • Available levels: 28 to 58 dynes (even numbers) and 59 to 71 dynes (odd)

  • Measure unit: dyne/cm (mN/m)


Formamide JUMBO
The Formamide JUMBO test pens correspond to the ASTM standards.
They are sold by box of 6 items (45 mL of ink in each pen).
The Test pens prefilled JUMBO are designed with reservoir and released valves. These systems allow to use virgin ink on demand.

  • Available levels: from 31 to 59 (even and odd) and 59 to 71 dynes (odd)

  • Measure unit: dyne/cm (mN/m)

  • ASTM standard measures: width: 1 cm, length: 7 cm


Lifetime of surface tension inks:
To avoid inaccuracies in dyne level reading, do not store the ink test pen at a temperature above 20° C or below 0° C.
If the pens are frequently opened, you should replace them regularly:

- Opening once a day _ conservation = 3 months
- Opening once a week _ conservation = 6 months storage
- Opening monthly _ conservation = 12 months storage
- Shelf life _ maximum 12 months

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