Skip to main content
RISE logo

Define particle size as part of process optimization

For viscose manufacturers, undissolved particles in the viscous solution are a problem because they can clog both the filters of the viscous solution and the nozzles in the spin bath. The processability of viscose mills is therefore negatively affected by the presence of particles.


We have a complete chain of pilot equipment from wood to finished viscose wire and the assignments in this area are increasing for us. Since we manufacture viscose solution in our viscose pilot, it is important to be able to measure its various properties such as the presence of particles and their size distribution. It is possible to evaluate different raw materials, types of dissolving celluloses, and process parameters in a good way.

The possibility of being able to measure the particle size is not limited to viscous solutions but can be used in many other contexts. In addition to measuring particles, the device can also measure cells, such as yeast cells.


The particle size meter Multisizer 4 from Beckman Coulter works according to the Coulter principle and can detect particles in the size range 0.4 to 170 µm, but it can measure up to 1600 µm with several additives.




Order via contact person



Define particle size as part of process optimization

Innovation area

Biorefinery, Chemical processes and products, Pulp and paper


Price on tender

Delivery time

Analysis results are delivered by e-mail, normally within 15 working days of the samples arriving to us. With reservation for samples that require special treatment. Express analyzes can be obtained at a surcharge by agreement.


No preparation needed

Contact person

Nadine Hollinger

Forsknings- och utvecklingsingenjör

Read more about Nadine

Contact Nadine
CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

* Mandatory By submitting the form, RISE will process your personal data.


Cannot find what you are looking for or are you curious about how we can help?

Send message
CAPTCHA This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

* Mandatory By submitting the form, RISE will process your personal data.


Test & demo

Viscose pilot plant

To develop and optimise regenerated cellulose, RISE has two viscose pilots, one on a micro-scale and another one for larger volumes of viscose solution. The pilots consist of six parts which together correspond to an actual viscos…
Test & demo

Spinning pilot - manufacture thread on a lab scale

Increased population in the world results in increased consumption of textiles. This means that the textile raw material needs to be optimised and its process developed to make them more sustainable so that the consumption of the …

Viscose fiber characterization

Fibre characterisation such as linear density, fibre strength or tenacity and elongation of staple fibres and filaments from viscose show the mechanical properties of the fibre.

Molecule weight distribution

RISE can characterize pulp, carboxymethylcellulose, polyacrylate, starch, biocides, lignin, black liquor, hemicellulose.

Analyzes of pulp for dissolving

To see if a cellulose pulp is suitable for dissolving, it needs to be characterized and tested, which RISE can help you with.

Light microscopy quickly shows small details

With light microscopy, you can quickly get an overview of the problem and all images are displayed in color. It is often used in connection with product development, problem solving and support to end customers. To gain an underst…

Troubleshooting gives you solutions to problems

Processes and products are often contaminated for various reasons and lead to driveability problems that create financial and environmental penalties and possible complaints from customers. RISE's solid expertise and equipmen…

The temperature can affect the viscosity

It is possible to measure viscosity with a temperature-controlled bath to determine the relationship between different temperatures and corresponding viscosity values. For some applications, the effect of temperature on the viscos…