Measure parameters from particle size, pore size, particle shape, internal structure, zeta potential, surface area, reactive area, density, powder flow, and many more, to successfully conduct your investigations.
Particle size analysis by laser diffraction
Anton Paar’s PSA series incorporates more than fifty years of experience. The world's first laser diffraction particle size analyzer – the first-ever PSA – was invented in 1967. The three models, consisting of the PSA 990, PSA 1090 and the PSA 1190 are designed to measure a wide range of particle sizes in liquid dispersions or dry powders.
The laser diffraction technique is an established method to measure particle sizes from the upper nanometer to the millimeter range. A laser beam is directed onto dispersed particles, then the laser light is diffracted by the particles, and the corresponding diffraction pattern is detected and evaluated. Anton Paar’s PSA instruments work with high-resolution detectors to provide accurate and reproducible measuring signals that are used to calculate particle size distributions based on the Fraunhofer and Mie theories. This guarantees full compliance with ISO 13320 and USP standards.
Solutions for a wide range of industries:
Cement & Building Materials
The PSA instruments, in fact, were designed following a request from the cement industry to develop a new technique for particle size measurement. To date, the requirements have not changed and the instruments are still widely used in the cement and building industry. The cast-iron base plate makes the system rugged enough to be used in the harshest environments. The patented (FR2933314) Dry Jet Dispersion technology ensures that the particles are homogeneously distributed within the sample. In this way, even cement samples that tend to agglomerate can be measured precisely.
Chemicals & Petrochemicals
Companies in the chemical and petrochemical industries are challenged with analysing particles in the sub-micrometer range. PSA 1090 is ideally suited for these measurements because it offers the world’s first dual laser design, which guarantees the highest level of accuracy and precision from 0.04 µm to 500 µm. Only Anton Paar’s laser particle size analysers fully integrate liquid and dry dispersion modes. This eliminates the need to manually switch, adjust, or align any hardware, and it also saves time. Solutions are available for all types of samples, including aggressive or expensive products and reagents.
Mining & Minerals
In the mining and minerals industry the robust design of the PSA instruments come into play. All optical components are mounted on a cast iron base plate to ensure the system remains in alignment even under the harshest conditions. The standard measurement range of 0.2 µm to 500 µm provided by PSA 990 is ideally suited for the needs of this industry. The integrated ultrasonic transducer provides you with an effective tool to de-agglomerate samples.
Does it measure liquid and dry samples?
The PSA series integrates both in one single instrument. PSA instruments are the only particle size analysers that can be configured with fully integrated liquid and dry dispersion modes in one instrument. This unique design eliminates the need for the operator to handle several accessories or make manual adjustments. The software enables the switching between liquid and dry dispersion modes with a single mouse-click, which saves time and prevents operation errors. There is no need to exchange the hardware, revalidate, or realign sensitive optics when switching between dispersion modes.
Are the results fully reliable?
The PSA series sets the benchmark. Anton Paar’s particle size analysers are fully ISO 13320 compliant to meet the demand for traceable, accurate and repeatable results. Whether running samples in dry or liquid dispersion modes, the complete analyser is qualified using certified reference materials. The unique design of the lasers and the optical bench set the market standard for a measurement reproducibility that is better than 1% variation. Accuracy and reproducibility are guaranteed for the entire life of the particle size analyser.
Is there stability for a lifetime?
The unrivaled robust design of the PSA series makes it possible. The unique optical bench design has all optical components permanently mounted on a cast iron base plate. This ensures alignment-free operation, even in the harshest environments. The rugged design ensures that the system remains aligned, reducing the maintenance requirements to a minimum throughout the entire life of the instrument.
Is there accurate size distribution of powder particles?
The unique Dry Jet Dispersion (DJD) technology is the solution. The size of dry powders is often difficult to measure because the particles tend to agglomerate, which falsifies the results. DJD technology is Anton Paar’s patented technique (FR2933314) for efficiently dispersing and precisely analysing powder particles. The innovative design features an air pressure regulator that quickly and easily adjusts the air flow in accordance with the sample properties. The shear forces created by the air flow separate agglomerated particles and in this way the size of each single particle can be detected.
Is there a broad particle size range?
The PSA series measures particle sizes from submicrons to a few millimeters. The single-laser PSA 990 covers a wide measuring range of 0.2 µm to 500 µm. For an even broader range, PSA 1090 and PSA 1190 have a unique optical design for diffraction analysis, which includes multiple lasers. While PSA 1090 has been designed with two lasers to resolve particles as small as 40 nanometers, PSA 1190 contains an additional third laser to cover the full measurement range of up to 2.5 mm.
Bitumen emulsions have simplified the processing and storage of bitumen and made road construction a simpler process. The physical, chemical and application-specific properties of bitumen emulsions are highly dependent on the solid content of bitumen, emulsifier and water, as well as the particle size of the bitumen droplets.
At ambient temperature bitumen is not processible. Therefore, different technical methods are used for processing. The best known technique is heating the bitumen until it reaches the liquid state. Another possibility is to process bitumen into an emulsion. Bitumen emulsions are colloidal mixtures of bitumen and water. However, mixing both substances does not form a stable system. Therefore, depending on the specific application, stabilisers and emulsifiers are added. In this ready-to-use state, bitumen can be stored, transported and further processed. The push for more effective and environmentally friendly construction processes has resulted in increased interest and research on bitumen emulsions.
Contact us to find out more:
Jocelyne Abreu: Business Unit Manager – Characterisation
+27 10 443 0963 / +27828086945