Precision Force Tensiometers
Attension® Sigma Force Tensiometers
Sensitivity
Class-leading balance sensitivity with a force resolution of 0.01 μN
Modularity
Modules available for temp. control, static discharge, active vibration, and more
Easy Operation
Touchscreen controls with step-by-step guided workflows simplify experiments
ASTM & IEC Protocols
Choose from pre-configured recipes for ASTM & IEC standards or build your own
Download the Attension® Sigma Product Brochure
See available configurations
Attension® Sigma Product Options
Fully Automated Force Tensiometer
Sigma Peak combines full automation, broad measurement capabilities, and flexible operation (PC-controlled or standalone), allowing teams to move seamlessly from method development to QC. It’s the ideal choice for labs that need maximum capability without sacrificing efficiency or ease of use.
Semi-Automated Force Tensiometer
Sigma Solo is an automated, standalone tensiometer built for reliable, everyday measurements. It simplifies surface and interfacial analysis with an intuitive touchscreen interface and guided workflows, minimizing training and operator variability. It’s the dependable solution for routine QC and other applications where speed and consistency matter most.
Manual Force Tensiometer
Sigma Base is a straightforward, manual force tensiometer designed for simple and cost-effective surface and interfacial tension measurements. It delivers essential performance with easy operation, making it a practical choice for labs that need a reliable entry point into tensiometry without added complexity.
Attension® Sigma Product Variations
Application-specific Configurations
Critical Micelle Concentration Measurements
Sigma CMC is a fully automated solution for precise critical micelle concentration (CMC) measurements. It streamlines complex surfactant analysis from concentration control to data interpretation, reducing operator variability and saving significant time.
Standardized Transformer Oil Measurements
Sigma Transformer Oil is a specialized, standards-compliant tensiometer designed for fast, reliable transformer oil quality control. With guided workflows and embedded methods built on ASTM D971 and IEC 62961 standards, Sigma Transformer Oil simplifies routine analysis and delivers straightforward results in PDF format.
Model: |
Sigma Peak |
Sigma Solo |
Sigma Base |
Sigma CMC |
Sigma Transformer Oil |
|
|---|---|---|---|---|---|---|
| Available Measurements | ||||||
| Surface Tension | ||||||
| Interfacial Tension | ||||||
| Critical Micelle Concentration (CMC) | Automatic* | Manual | Manual | Automatic | Manual | |
| Dynamic Contact Angle | ||||||
| Surface Free Energy | ||||||
| Powder Wettability | ||||||
| Density | ||||||
| Sedimentation | ||||||
| Adhesion Force | ||||||
| Balance Specifications | ||||||
| Measuring range (mN/m) | 1 - 2000 | 1 - 2000 | 1 - 1000 | 1 - 2000 | 1 - 2000 | |
| Displayed resolution (mN/m) | 0.001 | 0.1 | 0.01 | 0.001 | 0.01 | |
| Density range (g/cm3) | 0 - 2.2 | |||||
| Density resolution (g/cm3) | 0.001 | |||||
| Maximum Load (g) | 250 / 210* | 5 | 5 | 250 / 210* | 5 | |
| Weighing Resolution (mg) | 100 / 1* | 10 | 10 | 100 / 1* | 10 | |
| Force Resolution (μN) | 1 / 0.1* | 0.1 | 0.1 | 1 / 0.1* | 0.1 | |
| Contact Angle Range | 0 - 180° | - | - | 0 - 180° | - | |
| Contact Angle Resolution | 0.01° | - | - | 0.01° | - | |
| Software | ||||||
| Software | OneAttension / Standalone | Standalone | Data receiver | OneAttension / Standalone | Standalone | |
| Results Output | .bs, .xls, .csv, .pdf | Receipt, text | .bs, .xls, .csv, .pdf | |||
* : optional – : not available/not applicable
Sigma Measurements
Possible Measurements - Sigma
Surface Free Energy
This video will demonstrate a dynamic contact angle measurement with an Attension Sigma 700. Attension Sigma, while leveraging the OneAttension software, automatically evaluates the contact angle values to determine surface free energy values.
Surface & Interfacial Tension
This video will demonstrate a surface tension measurement with an Attension Sigma. Both the Du Noüy ring and Wilhemy plate can measure surface tension and interfacial tension.
Powder Wettability
This video will demonstrate a powder wettability measurement with an Attension Sigma 700. The Sigma’s balance measures the liquid absorption rate into the powder over time using the Washburn method.
Critical Micelle Concentration (CMC)
With CMC, the surface tension is measured as a function of surfactant concentration to automatically find the CMC point – the highest concentration of surfactant that will still affect the surface tension of the sample liquid. This video will demonstrate a CMC measurement with an Attension Sigma 700.
Adhesion Force
Adhesion force characterizes the force required to detach a liquid droplet from a surface that it contacts. This video will demonstrate an adhesion force measurement with an Attension Sigma 700.
Sedimentation
This video will demonstrate an sedimentation measurement with an Attension Sigma 700. Determines sedimentation rate using the mass of collected sediment in a liquid
Density
Determines the density of a liquid using a probe of known weight, or the density of a solid using a liquid of known density. This video will demonstrate an density measurement with an Attension Sigma 700.
Knowledgebase
Tensiometry Knowledgebase
Webinar
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White Paper
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