Wilten Instruments has a wide range of instruments. Because of the variety of options on some products we are not able to mention all of them on our website. Complete information is available on demand.
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Home  /  Tensiometers  /  Ez-Pi+

Small research oriented tensiometer

Equipped with a very high resolution sensor. Designed and built with reliability and ease of use in mind. EZ-PI Plus is compact size, and easy to move. State-of-the-art sensor technology with excellent resolution, connection for water bath, and intuitive user interface.

Accurate and fast surface
and interfacial tension measurements

  • A high precision instrument for research
  • Surface tension, oil/water interfacial tension, and contact angle measurements
  • Measures samples with high viscosity (Wilhelmy technique combined with small diameter probe). Currently tested to 100 000 mPas (Newtonian),
  • An easy to use tensiometer for educational purposes, no special training needed
  • An ideal instrument for the metal plating industry
  • Excellent for oil refineries for the monitoring of sour water
  • ASTM D 1331 – 14


Principle of operation minituarized Du-Noüy/ Wilhemly
Measuring range 1-350 mN/m
Accuracy/sensitivity 0.01 mN/m
Resolution 0.001 mN/m (0.2 µg) for 0-100 mg sensor and 0.003 mN/m (0.6 µg) for 0-300 mg sensor
Sample cup material Polypropylene / Glass / Teflon
Sample volume 0.5-3 ml std (stainless steel vial 25 – 50 microliter available on request )
Maximum viscosity 60 000 cP (Newtonian)
Average time per measurement Around 30 seconds
Temperature control 0-100 °C, connects to circulating bath