The LB-550S operates on the basis of dynamic light scattering. It allows for the precise measurement of nano particles in a size range from 1 nm to 6000 nm and a concentration range from ppm up to 40% solids. A very effective detector with a photomultiplier ensures the reliable measurement even of particles which scatter light only weakly such as proteins and polymers.
The analyzer is used for the measurement of fine suspensions, emulsions, all kinds of colloids and brines? in aqueous and organic media.
catalysts, ceramics, cosmetics, foodstuffs, inorganic materials, medical products, nano-coatings, paints, paper, pigment dispersions, plastics, polymer materials, research & development for nano-particles, semicondutors (CMP), ...
| Measuring principle | Dynamic Light Scattering |
| Measuring range | 1 nm - 6000 nm |
| Type of analysis | Wet analysis |
| Concentration range | 1 ppm up to ca. 40 Vol.% |
| Measuring time | ~ 2 minutes, from start of measurement to display of data |
| Measuring volume | ca. 0.1 - 30 ml |
| Dispersion liquid | Water, alcohol and other organic solvents (subject to the used cuvette) |
| Optical system - Light source - Detector |
Homodyne detection of back scattered light 650 nm Laser Diode, 5 mW Photo-Multiplier |
| Measuring cell | Cuvettes |
| Laser-type | Class 1 |
| Temperature range | 5 - 70 °C (build in Peltier-temperature control), sensor for temperatur in the cuvette |
| Operating environment | 15 °C - 30 °C, less than 85% rel. Humidity (no condensation) |
| Power supply | 100/120/230 V 50/60 Hz 150 VA |
| Dimensions (W x H x D) | ~ 340 x 305 x 565 mm |
| Weight (Measuring unit) | ~ 28 kg |
| Interface | SCSI ll (between PC and analyzer) |
| Operating unit | Operating and evaluation software in German, English, French for PC with Windows XP Operation with mouse and keyboard |
| *depending on feed material and instrument configuration/settings |
The focal point of the laser beam is brought as close as possible to the inner wall of the cell. This suppresses the effects of multiple scattering in highly concentrated samples and still provides sufficient signal strength for lower concentration samples because the scattered light is not attenuated by passing through a large volume of the sample dispersion. The angle of irradiation into the cell is also carefully controlled, eliminating the effects of stray and reflected light. This increases the signal-to-noise ratio and the ability of the LB-550 to measure diluted samples.
Sitelinks
Application Examples
Product Advantages
Features
Function Principle