By measuring particles Zeta potential to get electric point ,it is an important method of understanding particle surface electrical properties, is also an important means for surface treatment of the particles. The company produces ZETA-PM94 Series micro electrophoresis instrument is to measure the particle electrical equipment, due to ZETA-PM94 Series micro electrophoresis instrument is more suitable dilute dispersion system, and for the concentrated dispersion, the ZETA-PM01 series of thick paste electrophoresis more applicable.
Zeta potential was measured using the instrument quality exchange. The so-called mass-exchange Zeta potential analyzer fact, was determined according to the electrophoretic velocity Zeta potential, but it is not observed by one particle velocity, but the mass rate into the particle collecting directional movement on the electrode, the electrode increases according to Zeta potential weight calculation. Collecting electrode particles is detachable from the bottom of the sample cell, and its weight gain by weighing the sample before the test cell after the experiment and the weight obtained. Since the electrode at the opposite charge while collecting the particles, but also the discharge of the liquid medium with the same volume, weight gain is actually obtained electrode was deposited on the particle weight minus the weight of the same volume of liquid.
US weighing method are similar instruments, but it is difficult accurately weighed, the weight gain of the instrument is obtained in accordance with different concentrations of the light transmittance of the liquid, to obtain a light transmittance, and then obtain the corresponding concentration of the liquid, according to changes in concentration, weight gain is obtained. Therefore, compared with other types of domestic and international instruments, this instrument has significant advantages.
When users need to bring their own specific gravity meter, conductivity meter and viscometer the relevant constants used in calculations.
Feature
1. Change the sample cell weight into Zeta potential, there is no representation.
2.During the determining process, the sample cell is constantly rotating state, to avoid excessive particle settling problems.
3. The weight gain of the sample cell containing the overall results of the large particles and small particles, the small particles can't be not observed does not exist.
4. Measured with a high concentration of the sample which was close to the case of oil, the paper industry in actual use.
Application fields
This instrument is suitable for measuring high concentrations of concentrated dispersion of particles Zeta potential, for example:
1. For the petrochemical industry. Zeta potential measurement in oil drilling mud
2. Can be used for wastewater treatment. Between industrial wastewater contaminants and media often due to a certain state of Zeta potential of the suspension, by lowering the Zeta potential of the system, so that the dirt charge reduces, but does not recur coagulating sedimentation repulsion, so use this instrument measured the system Zeta potential, process conditions can be controlled by adding an appropriate amount at the appropriate point of flocculants to achieve lower system Zeta potential, thus achieving the purpose of purifying water.
3. For the paper industry. In the production of paper and papermaking coatings are required by Zeta potential measurement system to control the production process, in order to obtain high-quality paper.
Required ancillary equipment
Conductivity meter, Pycnometer, hydrometer, viscometer
In addition, the instrument can be widely used in cosmetics, mineral processing, health care, construction materials, ultra-fine materials, environmental protection, marine chemistry and other industries, is one of chemistry, chemical engineering, building materials and other important professional teaching equipment.
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