How to Measure Viscoelasticity, Stringiness or Tailing

Viscoelasticity measurement applications using the TA.XTplus Texture Analyser

STRINGINESS/SHORTNESS is the degree (distance) to which a product hangs on the probe when the probe is withdrawn. It is a big characteristic of mozzarella cheese or adhesives but is commonly the textural property possessed by sauces (e.g. ketchup, dessert sauces), confectionery glazes, baked product toppings and undoubtedly, syrups.

In the adhesive industry this characteristic is sometimes referred to as 'legging' or 'tailing', as stringiness may result in the formation of filaments or threads when the adhesive surfaces are separated.

Stringiness may be a desirable property, as is the case for mozzarella cheese or caramel decorations, but be considered undesirable for the application of paint where a 'short' texture is required for quick and clean removal of brushes from paint tins. It is related to the viscoelasticity of the product.


Typical properties that can be obtained from a texture analyser graph:

Consistency, Firmness, Cohesiveness, Index of Viscosity, Tailing, Stringiness, Shortness, Viscoelasticity
Typical texture analysis graph

Typical Texture Analyser graph with annotated properties of confectionery surface test


Typical Probe/Fixture used for Measurement:

Cylinder Probes and Compression Platens >>
Moderate/Large Cylinder Probe >>
Back Extrusion Rig >>

 

The above are only typical examples of viscoelasticity/ stringiness/ shortness measurement. We can, of course, design and manufacture probes or fixtures that are bespoke to your sample and its specific measurement.

Once your measurement is performed, our expertise in its graphical interpretation is unparalleled – no-one understands texture analysis like we do. Not only can we develop the most suitable and accurate method for the testing of your sample, but we can prepare analysis procedures that obtain the desired parameters from your curve and drop them into a spreadsheet or report designed around your requirements.

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Texture Analysis probes

Probes & Fixtures

The Texture Analyser uses a range of different probes and fixtures according to your specific application.

Exponent Software

Software

Whether you require a simple test and data analysis solution or a fully featured software package – we give you the choice.

Peltier cabinet

Temperature Control

If your product is temperature sensitive, we have a range of temperature monitoring and control options.


Acoustic Envelope Detector setup

Measure More than Force

By attaching peripheral devices you can collect additional measurement parameters during your standard texture analysis test.

Automated Linear Indexing System

Automation

Find out how to increase your sample throughput, walk away time and testing efficiency with several automation options.

Loadcell in case

Accessories

Our range of Texture Analyser accessories covers requirements for the use, maintenance and protection of your instrument.