MÁY ĐO SỨC CĂNG BỀ MẶT

Success meets flexibility

The close contact we keep with our customers and scientists inspires us to develop measuring solutions that are perfectly designed for versatile and demanding applications – from research and development to quality assurance. One of our most successful results is the Force Tensiometer – K100, a multi-flexible instrument for analyzing surfaces and interfaces. It performs high-precision, automatic, and reliable measurements of surface and interfacial tension as well as critical micelle concentration (CMC) and measures the contact angle on solids, fiber bundles and powders. This versatility makes it the most-sold tensiometer worldwide.

A uniquely wide range of methods

The K100 is a champion in versatility – offering the greatest flexibility. It provides the world‘s largest selection of measuring methods for characterizing surfaces and interfaces. The principal methods are based on the precise detection of the force that occurs when wetting a measuring probe or a solid sample. It is easy to measure surface and interfacial tension using standardized methods including the Du Noüy ring, Wilhelmy plate or rod method. But the K100 provides also a series of other central methods for analyzing liquids and the wettability of solids in various forms. Furthermore, the density of solids and liquids can be determined exactly with our accessories.

Designed for flexible usage and reliable measurements

The K100 guarantees highly reliable recordings and fast temperature control from -15 up to 300 °C. This enables thermal process conditions to be simulated or melts to be analyzed. The simple changeover between different measuring methods takes place entirely without reconfiguring the instrument. One of the biggest design advantages of our K100 is the large sample chamber that allows you to load the instrument more quickly, conveniently and safely. Even large-sized samples can be processed with maximum ease of use.

Fast and easy measurements of single-sided coated samples

The K100 has the option to obtain accurate contact angle results in the course of wetting and de-wetting of a solid, even for one-sided coated samples. With this extension of the dynamic contact angle, the K100 is able to analyze these samples fast and easily. Measuring smaller sample volumes with the rod method Our K100 performs the rod method perfectly. It uses a cylindrical rod with a small diameter instead of a plate. This allows measurements to be carried out in smaller vessels. The advantage, therefore, lies in reduced sample volumes.

TASKS AND APPLICATIONS

Determination of the effectiveness and efficiency of surfactants by critical micelle concentration (CMC) measurement

Wetting behavior of tablets, pharmaceutical active ingredients and excipients

Wetting of varnishes and paints

Decomposition product content in oils Tank clearance and cleaning validation in the food industry

Wetting and adhesion of coatings

Development of cosmetic products Wetting properties of inks

Wetting of fiber bundles and textiles

Analysis of surface modifications

MEASURING METHODS AND OPTIONS

Surface tension and interfacial tension using the ring, plate, and rod method

Surface tension and interfacial tension using the ring tear-off method, e.g. for measurements in accordance with ASTM D971

CMC of surfactants

Contact angle and surface free energy of solids, powders or fiber bundles

Density of liquids and solids

Sedimentation behavior of dispersions

Penetration resistance of sediments

Measurement from -15 to 300 °C, temperature measurement with internal or external sensor

HIGH PRECISION SURFACE AND INTERFACIAL TENSION

MEASUREMENT

• Highly sensitive force sensor with outstanding resolution
• Accurate and stable
• Large variety of sample holders

High-quality components for precise measurements

The Force Tensiometer – K100 is equipped with a high- precision force sensor leading to a resolution of 0.001 mN/m. Furthermore, all measuring probes such as rings and plates display a high and also certified shape accuracy.

More stability and smoothness for absolute precision

For maximum reproducibility, we eliminated the troublesome effect of vibration by using a dynamic and smooth running drive. Moreover, we reduced the long-term drift of the force sensor to a minimum.

A broad range of sample holders for various applications

Depending on the measuring method, a large selection of accurately shaped sample holders can be adapted.

The right sample holder for your application:

Sedimentation probe to characterize the sedimentation of dispersions

Measurement cone to characterize the penetration into sediments

Sample holder for foils and films

Sample holder for single fibers

Glass sample holder and a tool for uniform preparation to measure adsorption and wetting behaviors of powder samples

Fiber chamber for investigating the wetting properties of fiber bundles, pigments or powders

Sample holder for solid sample plates

SPECIFICATIONS:

– Maximum load: 210g

– Resolution: 10 ug

– Travel distance >110 mm

– Travel speed 0.1 – 500 mm/min.

– Measurement specifications: 1 to 2000 mN/m; Resolution 0.001 mN/m