MÜTEK SZP-10 System Zeta Potential

  ...  KNOW WHAT'S ON YOUR FIBER

The Mütek SZP-10 System Zeta Potential detects the surface charge of fibers and fillers.  Measuring samples before and after contact with a chemical additive evaluates the efficiency, for example, of a starch or a wet strength agent in the papermaking process.  The SZP is becoming a standard tool in the pulp and paper industry especially as process samples can be taken as they are, and do not have to be changed, for example, electrophoresis.SZP-10

By using BTG Software the results obtained by the SZP-10 can be transferred in a database to administrate them and also compare them with measurements of the Mütek PCD-04 Travel.

Measuring Principle

The centerpiece of the SZP is a plastic measuring cell with embedded patented platinum electrodes.  A fiber sample is drawn into the cell by applying a vacuum.  At the screen electrode a fiber plug forms.  A pulsating vacuum causes the aqueous phase to oscillate through the plug, thus shearing off the counter-ions and generating a streaming potential.  The zeta potential is calculated by using the measured streaming potential, conductivity, and the pressure differential.

For pigment measurements, the SZP-10 is offered with a special set of electrodes.

Benefits

  • Know charge conditions of your fiber
  • Characterise fillers and pigments
  • Observe efficiency of functional chemicals
  • Optimise chemical dosage


article date - 07/07/2011

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