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With its unique and innovative design, the Bettersizer Series (consisting of the Bettersizer S3 and the S3 Plus) combines the measurement methods of static light scattering and dynamic image analysis, thus offering a universal option for characterizing the size and shape of particles from the nanometer to the millimeter range.
Using the patented DLOI technology (Dual Lenses & Oblique Incidence), even nanoparticles from 10 nm onward can reliably be characterized. The additional lens between the laser and the measurement chamber enables the detection of the backscattered light. The use of only one laser with the oblique incidence of light provides a continuous scattering spectrum with consistent wavelength and allows the detection in a continuous angle range up to 165°.
Since the maximal intensity of the scattered light of large particles can only be detected at very small angles, the classical static light scattering cannot analyze those particles sufficiently enough. The Dual-CCD camera system of the Bettersizer S3 Plus enables, in contrast to other laser diffraction systems, the reliable detection of larger particles thanks to particle detection by the camera and thus allows realistic measurements up to 3.5 mm.
Thanks to the implemented dynamic image analysis, the most important shape parameters can be calculated from the individual particle images – aspect ratio, circularity, sharpness of edges, and others. The shape analysis can be carried out simultaneously with the size analysis or independently. Thereby you can choose between two magnifications for image collection (Bettersizer S3 Plus: 0.5X and 10X).
* The measuring range depends on the sample.
/1/ ISO 13320 Particle size analysis – Laser diffraction methods
/2/ ISO 13322-2: Particle size analysis – Image analysis methods – Part 2: Dynamic image analysis methods
/3/ ISO 9276-6 Representation of results of particle size analysis – Part 6: Descriptive and quantitative representation of particle shape and morphology
/4/ Particle World 19; p. 4 – 7; “<<The next generation>> in particle measurement: the combination of static light scattering and dynamic image analysis: Bettersizer S3 Plus”
/5/ CIT (Chemie Ingenieur Technik) 4/2018; “Exakte Partikelgrößen- und Formanalyse in einem Messgerät: Kombination statischer Lichtstreuung und dynamischer Bildanalyse” [available only in German]
/6/ Verfahrenstechnik.de, 08/2019, Pressemitteilung: https://www.verfahrenstechnik.de/partikelanalysesystem-besteht-ringversuch/ [available only in German]
/7/ Labo.de, 08/2019, Pressemitteilung: https://www.labo.de/optische-analysengeraete/bettersizer-s3-plus-besteht-erfolgreich-ringversuch-der-bam.htm [available only in German]
/8/ Particle World 20; p. 6-15; “The Bettersizer S3 Plus for particle size analysis – From Gustav Mie to the latest generation of laser diffraction devices”
/9/ CIT (Chemie Ingenieur Technik) 6/2020; „Untersuchung der partikulären Eigenschaften von Sanden hinsichtlich der Eignung zur Betonproduktion“ [available only in German]
/10/ Particle World 21; p. 5 – 8; „Investigation of different sands with the Bettersizer S3 Plus regarding their suitability for concrete production”
/11/ LABO 05/2021, “Qualitätsbeurteilung von Schleifmittelpulvern – Partikelmessungen an einem Korund” [available only in German]
/12/ LABO 05/2023, “Überkornanalyse – Grenzen der Laserbeugung bei der Partikelgrößenanalyse? [available only in German]
The BT-A60 autosampler is a compact and powerful sampling system compatible with the Bettersizer S3 and 2600 series for automating particle size measurement in the laboratory and thus reducing costs. The system doses up to 60 samples fully automatically, regardless of whether they are in the form of a powder or a pre-dispersed liquid dispersion. The integrated barcode printer ensures that the results are saved to the corresponding, correct sample. The sampler is cleaned automatically using ultrasound to prevent contamination.
The semi-automatic small volume wet dispersion unit BT-80N is compatible with the Bettersizer S3 and 2600 series devices and is ideal for reproducible particle size measurement in polar and non-polar solvents. Due to the small amount of liquid (approx. 50 – 80 ml), the consumption of solvent is low. The effective and controllable sonication with ultrasound enables the measurement of systems that are difficult to disperse and reagglomerating.
Cleaning and changing samples or solvents is very easy thanks to the quick-lock system. The sample is fed to the Bettersizer S3 or S3 Plus via a solvent-resistant tube and is controlled manually.
The fully automatic small volume wet dispersion unit BT-80N Pro is compatible with the Bettersizer S3 and 2600 series devices and is ideal for automatic, reproducible particle size measurement in polar and non-polar solvents. Due to the small amount of liquid (approx. 80 – 200 ml), the consumption of solvent is low. The effective and controllable sonication with ultrasound enables the measurement of systems that are difficult to disperse and react glomerating.
Sample supply and cleaning are automated via the unit’s integrated pump technology.
The online dispersant recycling unit A.R.U. (Automatic Recycling Unit) is a system for automatic cleaning of the dispersing medium of the Bettersizer S3 Plus and 2600 series particle size measuring devices. It can be used for the device setups:
With this system, solvent consumption (isopropanol, ethanol) can be significantly reduced, especially with high daily sample throughput.
| Bettersizer 2600 | Laser diffraction 0.02 – 2600 µm |
| Bettersizer ST | Laser diffraction 0.1 – 1000 µm |
| BeNano series | Dynamic Light Scattering 0.3 nm – 15 µm |
| BeVision D2 | Dynamic image analysis 2 µm – 10000 µm |
| DT-100 | Acoustic attenuation spectroscopy 5 nm – 1000 µm |
| DT-1202 | Acoustic attenuation spectroscopy 5 nm – 1000 µm |
