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Sigma 701
Computer-controlled tensiometer with high resolution balance
Measure ST (Surface Tension) and IT (Interfacial Tension) by ring/plate methods, DCA (Dynamic Contact Angles), wettability, sedimentation, density, CMC (Critical Micelle Concentration), absorption, wetting and Contact Angle of fiber and particle beds
Measure contact angles on single fibers
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Sigma 701 Tensiometer
 The Sigma 701 is a multipurpose tensiometer based on the Sigma 700 but equipped with a different microbalance optimized for a different range of applications. It can be upgraded from basic tensiometer to fully-equipped R&D workhorse to cover most of the mass-based methods you might need. It can run two dispensers simultaneously for CMC measurements and the high resolution balance makes it possible to measure single fibers only a few microns in diameter. The Sigma 701 is an excellent tool for those looking for a high performance, user-friendly standard tensiometer, as well as for anyone looking for exacting performance and precision in high-end applications.
Features
- Large working space & wide opening doors
- Dispenser and inert-gas ports
- LED illumination of measuring compartment
- Built in stirrer - no moving parts - no magnetic field during measurement
- Built in connectors for temperature and pH sensors
- Auto-locking & auto-calibrating microbalance
- Static charge eliminator
- High speed/extended length movement of sample stage
- Large and heavy sample measuring capability
- Small and light measuring capability (e.g. single fibres)
- Thermal separation space between balance and measuring compartment
- Removable measuring compartment for customized future measuring options such as Langmuir studies, high temperature applications, bursting membrane tests and X-Y sample positioning
- Enlarged pull-down sub-window for on-line viewing of selected data
- Optional synchronized dual dispenser software for dilution CMC measurements of highly concentrated solutions
| Specifications |
| Measuring range |
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0.01 to 1000 mN/m |
| Resolution (standard probe) |
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0.001 mN/m |
| Maximum load |
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5 g |
| Weighing resolution |
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0.01 mg |
| Force resolution |
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0.01 μN |
| Contact Angle range |
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0-180° |
| Contact Angle resolution |
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0.01° |
| Calibration and locking |
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Automatic |
| Stage speed |
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0.01-500 mm/min (others by request) |
| Stage positioning resolution |
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0.015 μm |
| Computer interface |
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USB (RS232 as option) |
| Temperature range |
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Thermoplastic water jacket -10 to 80°C
Stainless steel water jacket -10 to 150°C
Electrically heated jacket room temp. to 250°C
(others by request)
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| Measurements |
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240 x 330 x 620 mm (D x W x H) |
| Software modules |
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- ST/IT Software
- DCA Software
- CMC Software
- Density Software
- Powder Wettability and Sedimentation Software
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