- Surface tension
Du Noüy ring and Wilhelmy plate methods - Interfacial tension
Du Noüy ring method - Critical Micelle Concentration
Manual measurements with Du Noüy ring and Wilhelmy plate methods - Density
Density probe
Force Tensiometer
A standalone force tensiometer with automated sample stage for precise measurements. Easy to operate.
Dive into the specifics of Sigma 702 and compare it to our other instruments to make a smart decision on what you need.
Sigma 700 |
Sigma 701 |
Sigma 702 |
Sigma 702 ET |
Sigma 703 D |
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Available Measurements |
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Surface tension |
√ | √ | √ | √ | √ |
Interfacial tension |
√ | √ | √ | √ | √ |
Critical Micelle Concentration |
Automatic | Automatic | Manual | Manual | Manual |
Dynamic contact angle |
√ | √ | _ | _ | _ |
Surface free energy |
√ | √ | _ | _ | _ |
Powder wettability |
√ | √ | _ | _ | _ |
Density |
√ | √ | √ | √ | √ |
Sedimentation |
√ | √ | _ | _ | _ |
Balance Specifications |
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Measuring range (mN/m) |
1…2000 | 1…2000 | 1…1000 | 1…1000 | 1…1000 |
Displayed resolution (mN/m) |
0.001 | 0.001 | 0.01 | 0.01 | 0.01 |
Density range (g/cm3) |
0…2.2 | 0…2.2 | 0…2.2 | 0…2.2 | 0…2.2 |
Density resolution (g/cm3) |
0.0001 | 0.0001 | 0.0001 | 0.0001 | 0.0001 |
Maximum load (g) |
210 | 5 | 5 | 5 | 5 |
Weighing resolution (mg) |
0.01 | 0.005 | 0.01 | 0.01 | 0.01 |
Force resolution (µN) |
0.1 | 0.05 | 0.1 | 0.1 | 0.1 |
Contact angle range (°) |
0…180 | 0…180 | – | – | – |
Contact angle resolution (°) |
0.01 | 0.01 | – | – | – |
Calibration & Locking |
Automatic | Manual | Manual | Manual | Manual |
Measuring Unit Specifications |
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Sample stage |
Motorized | Motorized | Motorized | Motorized | Manual |
Sample stage speed (mm/min) |
0.01…500 | 0.01…500 | 0.01…500 | 0.01…500 | – |
Stage positioning resolution (µm) |
0.016 | 0.016 | 0.26 | 0.26 | – |
Dimensions (L×W×H, cm) |
33.3×24.4×62 | 33.3×24.4×62 | 33.3×24.4×62 | 33.3×24.4×62 | 27.5×15.5×39. |
Weight (kg) |
16.3 | 13 | 10.7 | 10.7 | 4.9 |
Power supply (VAC) |
85…264 | 85…264 | 85…264 | 85…264 | 100…240 |
Power consumption (W) |
13 | 13 | 13 | 13 | 7 |
Frequency (Hz) |
47…440 | 47…440 | 47…440 | 47…440 | 50…60 |
Common Accessories |
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Temperature control range (° C) |
-20…+200 | -20…+200 | -20…+200 | -20…+200 | -20…+200 |
Stirrer |
√ | √ | – | – | – |
Software |
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Provided software |
OneAttension | OneAttension | Data receiver | Data receiver | Data receiver |
System Requirements |
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Recommended system requirements |
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Operating system requirements |
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Sigma 702 comes with a powerful embedded software that guides the user in the measurements and shows the results on the integrated screen. Data can be also stored in PC with Data Receiver software for additional data storage and reporting.
Check out accessories and modules available for Sigma 702. We selected a few favorites for you, but you can always find the whole list below.
Pt-Ir-ring made to fulfill the requirements at least in following standards; ISO 301, ISO 4311, ISO 6889, ASTM D1331 and ASTM D 971. Includes also additional weight for push-mode.
Platinum Wilhelmy plate with micro roughened surface.
Chamber made from Teflon and Aluminum for temperature control of the sample liquid. A heat exchange vessel with fluid jacket type of construction. Heating/cooling of the fluid jacket requires external bath/circulator (T102ME or T102USB). Fits glass sample vessel 70 mm in diameter (T104). Operable temperature range from -20 to +200°C .
For printing results directly from instrument into paper.
Our instruments are present at many prestigious universities and research facilities world wide. Take a minute to find out what others say about our Sigma Instruments.
"We wanted the most accurate force tensiometer on the market for our research on surface tension. Our in-depth testing of the Attension force tensiometer convinced us: it is the one."
Riken is a Japanese research institute established in 1917. Its research areas include physics, chemistry, biology, medical science, engineering and computational science.
We have gathered our in-depth knowledge associated with Sigma 702 for you. Learn more from our white papers and overviews.