Particle Analyzer
HORIBA LA-950
The LA-950 operates on the basis of static laser light scattering (acc. ISO 13320) and was developed as a solution to customer requirements for a high-performance, flexible, and easy to use instrument for a wide variety of applications - from particle charactarization of powders and granules to the measuring of suspensions and emulsions. It can be ordered in different configurations for
- Dry measurement
- Wet measurement
- Combination of dry and wet measurement
The complete processing time from one sample to the next is only 1 minute, this is only a quarter of the usual time up to now. An integrated system and software automation guarantees simple operation and excellent reproducibility of the measuring results. The measuring cells are located on a movable slide which makes changing the dispersion unit a matter of seconds.
Single range-Samples can be measured over the complete range (0.01 to 3000 μm) without the need to combine different measurements and/or change lenses.
The LA-950 features a powerful circulation system for wet measurements. Thanks to the increased sensitivity small particles with a diameter up to 10 nm are reliably detected. In combination with the evaluation software the system sets new standards regarding precision, speed and resolution.
For dry measurements the effective dispersion unit PowderJet can be used. Thanks to the combination of dry measurement cell with integrated dispersion nozzle and suction mechanism, a great variety of powders can be dispersed and measured quickly and reliably.
Application Examples
catalysts, ceramics, chemical-mechanical polishing, cosmetics, foodstuffs, metal powders, nano-coatings, pigments, research & development for nano-particles, ...
Product Advantages
- Compct design
- Dry and wet measurement possible
- Very wide single measuring range from 10 nm to 3 mm
- Analysis according Mie Scattering Theory
- Sample throughput time of only one minute
- Extremely high resolution in the sub-micron range
- Exchange of measuring cell within seconds
- Effective ultrasound and stirring dispersion
- 21 CFR Part 11 compliant software
Features
| Measuring principle | Mie Scattering Theory according ISO 13320 |
| Measuring range | 0.01 µm - 3000 µm |
| Type of analysis | Dry and wet analysis |
| Measuring time | ~ 5 seconds (from start of measurement to display of data) ~ 1 minute (from dispersion liquid filling to measurement and rinse) |
| Measuring method | Manual flow cell measurement Manual fraction cell measurement (Fraction cell and cell holder optional) Dry measurement (PowderJet Dry Feeder optional) |
| Required sample amount* | 10 mg - 5 g (for flow cell measurement; depending on feed material) |
| Filling quantity | Flow cell: 180 - 290 ml, in 4 steps adjustable Fraction cell: ~ 15 ml |
| Dispersion liquid | Water, alcohol and other organic solvents |
| Optical system - Light Source - Detector |
Inverse Fourier-optics 650 nm Laser Diode, 5 mW 405 nm LED, 3 mW 64-division ring shaped detector (forward direction) 23 separate wide-angle detectors (side and reverse direction) |
| Sample circulation system - Ultrasonic chamber - Discharge volume - Automatic filling pump - Sample flow cell |
Probe: 130 W, 28 kHz 10 l/min, 15-step speed selection 10 l/min Tempax glass |
| Operating environment | 15 °C - 30 °C, less than 85% rel. Humidity |
| Power supply | 100/120/230 V, 50/60 Hz, 300 VA |
| Dimensions (W x H x D) | ~ 705 x 500 x 530 mm |
| Weight (Measuring unit) | ~ 80 kg (without Dry Powder Jet) |
| Interface | USB 2.0 (between PC and Analyzer) |
| Operating unit | Operating and evaluation software in German, English, French for Windows XP and PC with 2 GHz and 256 RAM Operation with mouse and keyboard |
| Options and Accessories - Dry dispersion unit - Fraction cell - Micro-quantity dispersion unit - Circulation system - Automatic filling pump - Autosampler - Transport case |
yes Tempax glass, 5 ml resistent to organic solvents, 50 ml resistent to organic solvents, 180 - 290 ml 10 l/min (included) for 24 saples - |
| *depending on feed material and instrument configuration/settings |
Function Principle
The good results for measurements in the sub-micron range are mainly based on the fact that with very fine particles the strong, blue LED light source ensures a clear signal with large scattering angles. These signals are recorded by the innovative 4-channel detectors with increased sensitivity and an extremely high reading frequency of 5,000 values per second. This makes it possible to measure many new materials in the nanometre range which up to now required other methods such as photon correlation spectroscopy (PCS). This is a clear advantage for the user because the analytical performance in combination with a wide measuring range can, in certain circumstances, save the expenditure for a further particle analyser.
The optical layout of LA-950 uses a light path that is about 4 times the length of that of conventional devices. By extending the light path, the signal/noise ratio was considerably improved.
Thanks to the reverse Fourier optics and the light path folded by mirrors, a very compact design size was realized. A newly developed segmented multi-element detector with special arrangement and increased sensitivity of the individual detectors allows the light diffracted at a small angle by large particles to be accurately recorded.
The effectiveness of these new developments is exemplified by the very high resolution of LA-950. For example, it is possible when measuring a multi-modal distribution to resolve five separate modes. Three of these modes can be within a single decade.
The good results for measurements in the sub-micron range are mainly based on the fact that with very fine particles the strong, blue LED light source ensures a clear signal with large scattering angles. These signals are recorded by the innovative 4-channel detectors with increased sensitivity and an extremely high reading frequency of 5,000 values per second. This makes it possible to measure many new materials in the nanometre range which up to now required other methods such as photon correlation spectroscopy (PCS). This is a clear advantage for the user because the analytical performance in combination with a wide measuring range can, in certain circumstances, save the expenditure for a further particle analyser.The optical layout of LA-950 uses a light path that is about 4 times the length of that of conventional devices. By extending the light path, the signal/noise ratio was considerably improved.
Thanks to the reverse Fourier optics and the light path folded by mirrors, a very compact design size was realized. A newly developed segmented multi-element detector with special arrangement and increased sensitivity of the individual detectors allows the light diffracted at a small angle by large particles to be accurately recorded.
The effectiveness of these new developments is exemplified by the very high resolution of LA-950. For example, it is possible when measuring a multi-modal distribution to resolve five separate modes. Three of these modes can be within a single decade.
Sitelinks
Application Examples Product Advantages Features Function Principle
Retsch Technology is the exclusive distributor of Horiba particle analyzers for Germany, Switzerland, Austria, Netherlands and Belgium.
For other countries please find your local contact at horiba-particle.com.
For other countries please find your local contact at horiba-particle.com.
