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Attension® Force Tensiometers

Precision Force Tensiometers

Attension® Sigma Force Tensiometers

Attension Sigma Force Tensiometers by Biolin Scientific enable precise characterization of material surface and interfacial properties for both quality control and R&D. At the core of the Sigma Force Tensiometer series is an ultra-sensitive force balance and robust instrument design, allowing the most accurate and user-friendly measurements of surface tension, interfacial tension, and liquid density. With a suite of additional probes available, the Sigma Force Tensiometers are versatile instruments in understanding the interfaces of liquids and solid surfaces.

Sensitivity

Class leading balance sensitivity with a force resolution of 0.005 μN

Modularity

Plug-and-play modules and upgrades with a multitude of available force probes

Sturdy and Affordable

Robust design with a touchpad for instrument control and quick experimental setup

Tailored Options

Step-by-step directions for basic measurements or software-powered customizability

Download the Attension® Sigma Product Brochure

See available configurations

Attension® Sigma Product Options

Attension Sigma Force Tensiometers employ a simple and robust technique to measure surface tension, interfacial tension, and density of liquids. These direct measurements allow determination of a liquid material properties, like critical micelle concentration. Beyond surface/interfacial tension, the availability of multiple probes allows measurements of the interaction between solid and liquid surfaces, including powder wettability, dynamic contact angles, sedimentation, and adhesion. Understanding these interactions plays a critical role in surfactant development, adhesion, formulation development, absorption, and wettability.

The Sigma 700/701 allows the highest sensitivity and largest range of experimental options. Automatic computer-controlled measurements of surface tension, interfacial tension, powder wettability, dynamic contact angles, critical micelle concentration, density, sedimentation, and adhesion force.

The Sigma 702 is a semi-automatic standalone force tensiometer workhorse for surface tension, interfacial tension, density, and manual critical micelle concentration measurements. Step-by-step instruction on the instrument screen makes these measurements fast and the data reproducible.

The Sigma 702 ET Transformer Oil Analyzer is a semi-automatic standalone force tensiometer for oil and water interfacial tension measurements in accordance with the ASTM D971 and IEC standards.

The Sigma 703 D is a manual standalone force tensiometer for accurate measurements of surface tension, interfacial tension, and density at the best value.

Sigma Measurements

Possible Measurements - Sigma

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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.

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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. 

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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.

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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.

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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. 

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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

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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

Optimizing Battery Materials with Force Tensiometer for Efficient Manufacturing

With the increased reliance on batteries for renewable energy power consumption, the devel…

Blog

8 Factors That Affect the Cost of a Force Tensiometer

A force tensiometer is an instrument that uses a highly sensitive analytical balance and s…

White Paper

Optical vs. Force Tensiometry

Surface and interfacial tensions of liquids significantly affect their wetting behavior an…

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Attension Sigma

Sigma Model Comparison

Model:

Sigma 700

Sigma 701

Sigma 702

Sigma 702 ET

Sigma 703 D

Available Measurements
Surface Tension
Interfacial Tension
Critical Micelle Concentration Automatic Automatic Manual Manual Manual
Dynamic Contact Angle
Surface Free Energy
Powder Wettability
Density
Sedimentation
Balance Specifications
Measturing 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
Density resolution (g/cm3) 0.0001
Maximum Load (g) 210 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

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