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PA Fast Sizer



PA Fast Sizer

Colloidal Particle Size Analysis

offers a fast and comprehensive solution to analyse the characteristics of nano- and micro-scale particles in concentrated, viscous, coloured or turbid dispersions. It enables direct measurement of colloidal systems without the need of dilution.

The opaqueness and unstability of colloidal systems have been the great obstacles that even the most advanced optical measuring technologies cannot overcome. Concentrated dispersions have to be diluted before being measured optically. From the viewpoint of research, the sample preparation results in a destructive and slow measurement. From the viewpoint of quality control, this method is not ideal to implement on line. Beside all that, it is arguable whether the extensively diluted samples represent the same characteristics as the original concentrated colloid systems in the real world application.

Instead of optical methods, PA has developed its own Acoustic Extinction Spectroscopy (AES) technology based on the difference between the viscous effect of the fluid and that of the particles. Acoustic waves travelling through a dispersion will force both the particles and the fluid to move, but at different velocities. The velocity difference results in the energy loss, from which the particle sizes can be precisely derived. By applying oscillating acoustic waves at different high frequencies and analysing their energy losses, PA Fast Sizer is able to acquire accurate and reliable evaluation of particle sizes very quickly without the need to dilute concentrated dispersions.

In addition to its non-destructive and non-invasive advantages, the AES technology is able to measure reliably the dispersions in a flow-through tube or in a stirring container. This powerful feature opens up the possibilities to study unstable samples and real-life concentrations, as well as the applicabilities of on-line quality control.

Colloidal Particle Size Analysis
by Acoustic Extinction Spectroscopy

  • Fast, direct, calibration-free, dilution-free, non-invasive & non-destructive.
  • Real sizes, distribution model free.
  • Wide ranges of concentration & particle size.
  • Wide fields of applications - tiny samples, flow-through, batch, R&D, QA/QC.
  • Sedimentation & agglomeration prevented by stirring or flowing.
  • Modular and readily integrated to PA's other devices.
  • Can be integrated into user's process.

Partikel Analytik (PA) is the expert in the field of material sciences who has been devoted to the research on the characterisation of liquid dispersions for two decades. This German brand has gained a good reputation among their users in a dozen of countries in the world.

Visit Partikel Analytik.



Academic Research:

  • Physics, Chemistry and Physical Chemistry
  • Food and Pharmaceutical Sciences
  • Material Sciences
  • Environmental, Civil, Mechanical and Ceramic Engineering

Industrial R&D, QA and QC:

  • Nano-Dispersions
  • Food Colloids
  • Ceramics
  • Paints, Inks, Pigments
  • Semiconductors
  • Light Phosphors
  • Paper Coatings   
  • Catalysts and Zeolites
  • Cement, Clay Minerals
  • Coal Slurries and Mineral Processing
  • Filtration and De-Watering
  • Wet Milling and Grinding
  • Abrasives and Polishing
  • Control of Surface Coating
  • Control of Homogenization

Ideal for Real Colloid Systems

PA Fast Sizer offers reliable high-resolution measurement of real-world concentrated, viscous, coloured or turbid dispersions in all solvents.

In case of solid/liquid dispersions, the resolution depends on the density difference between the particles and the solvent as well as on the volume concentration of the particles. In case of emulsions, the resolution is based on thermodynamical contrast parameters. In either case, the influence of dust and other impurities can be mostly neglected. Field and process samples can be measured with ease by PA Fast Sizer.



Performance in Real Applications

PA Fast Sizer can be integrated into a milling system to monitor the particle size changes and control the milling process. The following example shows the particle size changes of titanium dioxide (TiO2), before and after 240 minutes of wet grinding.

It also shows particles of two different diameter scales. No information on the type of distribution (i.e. mono- or multi-modal, Gauss, log normal, etc.) is required. Small particle sizes can be clearly measured even in the presence of large particles, including impurities, without fitting to any distribution models.

TiO2 Particle Size Changes in Process

In the example below, PA Fast Sizer is used to measure two dispersions before and after mixture. It is clearly observed that the particles of two different diameters can be correctly distinguished after the mixture. Again, small particles won't be overwritten by large particles.

Particle Size Distribution of (1) only Levasil; (2) only Silica suspension; (3) mixed.



Time Series Measurement

By setting up the time internal, the users can ensure their process control and on-line quality control with the time series measurement feature.

Time Series Size Distribution.


User Interface

The user interface has been continuously improved from our user feedback for already two decades. With simply one click, a thorough analysis report will be generated in real time and can also be exported to Excel. The report may include particle size, pH, temperature, electrokinetic sonic amplitude (ESA), phase, conductivity and Zeta potential, depending on the selected PA tool package. Nonetheless, the procedures are all automated and the software is already integrated. Minimal training is required.

PA Fast Sizer User Interface
PA Fast Sizer User Interface.

There are parameters required for particle size computation. They are: (1) The density and viscosity of the solvent plus the velocity of sound in the solvent, all of which can be found easily. (2) The particle density and its volume concentration. Frequently used parameters can be saved as presets in the software's database.


Optimal Configuration

A total of 13 different high frequencies ranging from 1 to 100 MHz will be applied for attenuation detection. The frequency values can be customised so as to optimise for the materials of interest to the users. The optimal particle size measuring range ( 5 nm ~ 50 μm ) will also change according to the selected frequencies.


Integration & Customisation

PA Fast Sizer can be seamlessly integrated with PA Field ESA, PA Fluid Station, PA Rhometer, which constitutes a comprehensive Dispersion Analysis system. This turnkey solution can measure Zeta potential and isoelectric point. It can also carry out pH titration and addition optimisation automatically with programmable procedures. The required parameters will be passed spontaneously from one device to another through the Smart Sensors employed in every PA modular devices. The interaction does not need a computer or manual input.

PA Dispersion Analysis Integration
Dispersion Analysis Turnkey Solution

Partikel Analytik's workshop follows the philosophy of STEM (Science, Technology, Engineering and Mathematics) and is able to tailor the system to solve your specific problems, from the applications required by laboratories to factories, from an integrated in-line implementation to a simple dip-in sampler, from the purpose of processing to that of education. Partikel Analytik's workshop configures and implements the optimal turnkey solution into your hardware and software environment.




Measuring Capabilities
  Particle Size 5 nm ~ 50 μm*
  Applied Frequency 1 ~ 100 MHz*
  Ultrasonic Attenuation 0.1 ~ 100 dB/cm
  Data Acquisition Time 2 mins (time required for a single measurement)
  * Depends on the nature of the material and the density difference between the particles and solvent.
Sample Requirements
  Volume > 2 ml
  Density Difference > 0.1 g/cm3 (between the particles and the solvent)
  Particle Concentration 0.5 ~ 50 % v/v*
  Solvent Aqueous and non-aqueous solvents
  * Depends on the nature of the material and the density difference between the particles and solvent.
Software (Windows required)
  User Interface Calibration Free, Customisable, One-Click Measurement
  Analysis Report (Excel)

Particle Size Distribution, Aspect Ratio, Attenuation Spectroscopy
pH, Temperature, ESA, Phase, Conductivity, Zeta Potential**

  ** Optional. Depends on the degree of integration with Field ESA, Titrator and Rhometer.

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