MÜTEK Lab Equipment

MÜTEK PCD-04 PARTICLE CHARGE DETECTOR

The MÜTEK PCD-04 Particle Charge Detector measures colloidally dissolved substances in a process sample. It is a standard tool for detecting anionic trash levels as well as for characterizing chemical additives. Equipped with an optional pH probe, the pH value of samples can be monitored and the isoelectric point be determined.

To measure charge the sample material has to be titrated in the PCD measuring cell. Highest accuracy and reproducibility is achieved by combining the MÜTEK PCD-04 with the automatic titrator MÜTEK PCD-T3. This set-up is widely used around the world in:

• R&D labs of chemical suppliers and paper mills
• Universities, institutes, schools
• Applications outside the paper industry

MÜTEK SZP-10 System Zeta Potential

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 e.g. electrophoresis.

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 counterions 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.

MÜTEK DFR-05 Drainage Freeness Retention
Highly Efficient Lab Evaluation Of Retention Aids