Attension® Sigma Force Tensiometers
Attension® Sigma CMC
The Attension® Sigma Peak CMC is a fully automated force tensiometer purpose-built for rapid and highly reproducible critical micelle concentration (CMC) measurements. Powered by OneAttension software and an ultra-sensitive force balance, Sigma Peak CMC automates the entire measurement process, enabling researchers to accurately determine surfactant behavior while minimizing operator variability.
Fully Automated
Automated CMC measurements reduce user variability and improve reproducibility
High Sensitivity
Ultra-sensitive force balance detects subtle changes in surface tension throughout micellization
Easy Operation
Guided workflows and intuitive OneAttension software simplify experiment setup and analysis
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Maximum Experimental Flexibility and Automation for Surface and Interfacial Science
Supported measurements
All measurement methods listed are included with OneAttension at no additional cost.
Surface Tension/ Interfacial Tension
Measures forces at a liquid’s surface or at an interface between two dissimilar phases.
Applications:
Detergents, agrochemicals, paints, food science, pharmaceuticals
Critical Micelle Concentration (CMC)
Measures the surfactant concentration where micelles form
Applications:
Pharmacology, contaminants, detergents, sodium dodecyl sulfate (SDS) studies, cosmetics
Surface Free Energy (SFE)
Evaluates how easily liquids spread or stick to a solid surface by measuring surface wettability
Applications:
Surface cleanliness, powder processing, adhesives, paints
Powder Wettability (Washburn)
Capillary-driven liquid rise through packed powder bed
Applications:
Fabrics, soil, carbon fibers, inks, paints, food science
Adhesion Force
Measures the force that is required to detach a liquid droplet from a surface
Applications:
Self-cleaning surfaces, coating durability, ink adhesion, surface treatments, micro-textured surfaces
Sedimentation
Determines sedimentation rate using the mass of collected sediment in a liquid
Applications:
Cosmetics, food science, pharmaceuticals, paints, coatings, environmental science
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
Applications:
Oil, food science, pharmaceuticals, coatings
Attension® Sigma CMC
Product Features
Fully Automated CMC Measurements
Sigma Peak CMC automates the complete CMC measurement process from beginning to end. After selecting the measurement method, the instrument performs the experiment automatically, collecting high-quality surface tension data across the required concentration range. Automation improves repeatability while reducing operator influence and overall experiment time.
Ultra-Sensitive Force Balance
At the heart of Sigma Peak CMC is a precision microbalance capable of detecting extremely small force changes at liquid interfaces. This exceptional sensitivity allows accurate measurement of surface tension throughout the micellization process, ensuring reliable identification of the critical micelle concentration.
Optimized for Surfactant Characterization
Sigma Peak CMC is specifically configured to characterize surfactant behavior through highly reproducible surface tension measurements. Researchers can quickly evaluate new formulations, compare surfactant performance, optimize concentrations, and monitor product consistency during development or production.
Intuitive OneAttension Software
OneAttension software guides users through experiment setup, automated data collection, and result analysis within a single interface. Flexible recipe-based workflows simplify routine testing while allowing advanced users to customize experimental parameters when needed. Automated data visualization makes identifying the CMC straightforward and repeatable.
Stable Measurement Environment
Protective doors shield the measurement area from air currents and external disturbances that can affect sensitive force measurements. This improves baseline stability and enhances measurement repeatability, particularly during long automated experiments.
Application Support & Local Service
In the US and Canada, the Attension products are supported and serviced by Nanoscience Instruments. We pride ourselves on providing exceptional application support and field service, ensuring your team of users is well-trained and the instrument is up and running in optimal condition. Whether you are interested in discussing the feasibility of a specific experiment or need help with troubleshooting your Attension system, our Support teams are here for you!
Attension® Sigma CMC
Accessories
Temperature, pH, and Mixing Control
Surfactant behavior is highly dependent on environmental conditions. Optional temperature probes, pH sensors, and magnetic stirring accessories allow users to monitor and control these critical experimental parameters throughout CMC measurements, improving consistency and reproducibility.
Ionizer for Static Discharge Control
Electrostatic charge can introduce unwanted noise into highly sensitive force measurements. An optional ionizer neutralizes static electricity around the measurement area, improving baseline stability and increasing confidence in low-force measurements.
Attension® Sigma CMC
OneAttension Software
Sigma Peak CMC is powered by OneAttension, an intuitive software platform designed to simplify automated surfactant characterization.
- Fully automated measurement workflows
- Real-time data analysis and visualization
- Intuitive user interface for all experience levels
- Flexible recipe-based experiment setup
The software combines all force tensiometry measurement modes into a single interface, with no additional modules to purchase, simplifying both data acquisition and analysis while improving reproducibility.
Attension® Sigma CMC
Product Knowledgebase
Webinar
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White Paper
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