About Sigma 703D Force Tensiometer

UK based Dyne Testing offer the Sigma 703D Force Tensiometer, a simple standalone and robust digital force tensiometer for accurate measurement of surface and interfacial tension. Manual critical micelle concentration (CMC) measurements can also be conducted.

The Sigma 703D is extremely easy to use.  With convenient control keyboard operations and open design there is no need for an external computer.  Measurements are displayed in real-time on the large digital screen integrated into the instrument and can be transferred to a computer using the Data receiver software.

For quick and reliable stand-alone operation and manual control, Sigma 703D is a great choice. The major difference between the Sigma 703D and Sigma 702 models is the manual sample stage of Sigma 703D.


Sigma 703D is a force tensiometer for determination of:

  • Surface tension
  • Interfacial tension
  • Critical micelle concentration
  • Density


Available Measurements
Surface tension Yes
Interfacial tension Yes
Critical micelle concentration Manual
Dynamic contact angle No
Surface free energy No
Powder wettability No
Density Yes
Technical Specifications
Measuring range (mN/m) 1 to 1000
Displayed resolution (mN/m) 0.01
Density range (g/cm³) 0 to 2.2
Maximum load (g) 5
Weighing resolution (mg) 0.01
Contact angle range
Contact angle resolution
Calibration & locking Manual
Sample stage Manual
Temperature range (°C) -10 to +100

Recommended system requirements

  • 1GHz processor, 1GB MB RAM, 40 GB hard disk drive (20GB free), 1 USB port
  • Accessories such as water bath and liquid dispenser may require a free RS-232 port

Operating system requirements

  • Windows 7 & 8 (32 or 64 bit), Windows Vista (32 bit), Windows XP SP3 (32 bit)

All Downloads

Filename Size Download
Sigma 703D Force Tensiometer Accessory List 0.47MB Download

Ordering Information

Part Number Description
40-Sigma 703D 703D Tensiometer, 240VAC, 50 Hz including:

  • Manual sample stage
  • Manual calibration and locking


For further information about Accessories, see the Sigma 703D Force Tensiometers Accessories Brochure.

Part Number Description
Environment and Sample Control: Temperature & Cabinet
40-T705ET Thermostatic vessel (from -10 to +100°C)
40-T115 Gas phase temperature controller
40-T102MC Bath/circulator, Julabo F12-MC
40-T102ME Bath/circulator, Julabo F12-ME
40-T102ME Temperature probe for the Julabo bath circulator F25ME
40-T102ED Bath/circulator, Julabo F12-ED
40-T202 Digital thermometer
40-T140CAB Cabinet
40-T113 Density measuring device
Probes & Calibration
40-T106 Platinum Du Nouy ring
40-T106A Certificate for Du Nouy ring dimensions
40-T106B MIKES calibration certificate for Du Nouy ring
40-T107 Wilhelmy Plate, platinum plate with micro roughened surface
40-T107A Certificate for Wilhelmy plate dimensions
40-T107C MIKES calibration certificate for the Wilhelmy plate
40-T117B Certified calibration kit
40-T120 Calibration weight
40-T108 Ring re-form tool
40-T104 Sample vessel, diameter 70mm, 5 pcs/box
40-T105 Sample vessel, diameter 50mm, 5 pcs/box
PC & Software
40-T130 Computer with pre-installed software
40-T702PR Printer
Maintenance & Services
40-STUP-EU Start up & training
40-SERV2 Service contract level 2
40-SERV 3 Extended warranty

  • Last updated: June 2024
  • Version: 1.0

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.