Attension® offers leading contact angle and surface tension solutions for industrial quality control and R&D as well as for academic research. The core of Attension solutions is a combination of easy-to-use, smart instrumentation with broad surface science capabilities.

Measurements

• Static contact angle
• Dynamic contact angle
• Roll-off angle
• Surface free energy (SFE)
• Surface tension
• Interfacial tension
• Batch contact angle
• Roughness corrected contact angle
• Interfacial rheology (viscoelasticity)

Technology

An optical tensiometer records drop images and analyzes the drop shape automatically. The drop shape is a function of the surface tension of the liquid, gravity and the density. On a solid, the drop shape and the contact angle also depends on the properties of the solid (e.g. surface free energy, topography). The captured image is analyzed with a drop profile fitting method in order to determine contact angle and surface tension. Surface free energy can be calculated by performing contact angle measurements with several known liquids.

As an optical method, the measurement precision of optical tensiometers depends on the quality of the pictures and the analysis software. Attension Optical Tensiometers utilize a high quality monochromatic cold LED light source to minimize undesirable sample evaporation. Image quality is guaranteed by a high-resolution digital camera, quality optics and the accuracy of the drop fitting method.

Measurements

• Surface tension
• Interfacial tension
• Critical Micelle Concentration
• Dynamic contact angle
• Surface free energy
• Powder wettability
• Density
• Sedimentation
• Adhesion force

Full Automation for High Precision

The systems can be fully automated, avoiding user variation and saving you time. Highly precise measurements can be performed easily with just one click.

Optimized Yet Versatile

Sigma 700 and 701 have full support of all measurement modes, making them adaptable to all measurements and applications. However, they are also optimized for different experiments. Sigma 700 is the optimal choice especially for powder wettability and contact angle experiments. Sigma 701 is a great choice for surface tension and interfacial tension experiments due to its very high sensitivity.

Sophisticated Software

The OneAttension Software provide all measurement modes, full automation, easy measurement setup and live results. But above all, it is really user friendly and intuitive.

QSense® is the world-leading, premium QCM-D solution for nanoscale tracking of interactions at surfaces and interfaces. It can provide you with unique, reproducible, in-depth data with high productivity and ease of use along the way.

This enables a fundamental understanding of processes, an early indication of real-life outcome and the ability to optimize products and processes for authentic conditions. By investing in a QSense instrument you put yourself and your team at the forefront of scientific progress and technological innovation.

• Designed for Carrier Gas in GC, GC-MSD and “FAST GC”
• UHP Purity that meets the needs required by the track analysis
• Security system with audible alarms, display messages and automatic production stop in case of gas leaks
• Available the automatic Switch with inert gas when Hydrogen alarm
• Parallel connection from series up to 4 stacked generators

Our range of nitrogen generators consists of 11 different types of devices with varying purity levels up to 99.9995%. These generators are designed to meet industrial and analytical needs, where the production of ultra-pure nitrogen is often required. Backed by our proprietary Fast Purity® patent, all our nitrogen generators achieve the desired maximum purity in reduced time, progressively increasing gas self generation efficiency.

• Designed to satisfy the needs of all LCMS analyzers on the market
• The PSA technology with molecular sieves, used in the NiGen series, are drastically reducing the O2 and H2O residual but also the HC presence in the air, offering an extremelly pure nitrogen output (phthalate-free)
• Built-in compressor oil free including 2 x 50 l. tanks for Compressed Air and Nitrogen
• Highly reliabile Air compressor with maintenance required only after 16,000 hours of work
• 2 gas outlets available: UHP Nitrogen and Oil Free Air

The AirGen GC delivers ultra-high purity zero air to ensure optimal gas chromatography performance, making it suitable for various GC detectors.

The dynamic contact angle measuring devices and tensiometer of the DCAT series are universal measuring devices for the force-based measurement of interfacial parameters and phenomena.

Surface tension acts to contract and minimise any liquid surface. If a surface is being enlarged by the formation of a liquid lamella, as a test body, such as a Wilhelmy plate or Du Noüy ring, is in contact with it, the surface tension exerts a tensile force that can be measured. Within a tensiometer this force is measured by a high precision weighing system and, hence, the surface tension of the liquid can be calculated.

Using a tensiometer, also the interfacial tension between two liquids can be measured with the help of a test body. Since tensiometry is based on force measurements it is – in contrast to the optical analysis of pendant drops – not necessary that one of the liquids is transparent or that the refractive index differs between the two liquids. Therefore, tensiometry is in many cases a handy alternative to the optical measurement of surface and interfacial tensions.