The Micromeritics SediGraph continues to be a prefered standard instrument for particle size analysis in many laboratories throughout the world. Whether in a rugged production environment or a controlled laboratory setting, the SediGraph continues to produce accurate results with superior reliability. Particle size distribution is measured using the sedimentation method. Particle mass is measured directly via X-ray absorption. By measuring the rate at which particles fall under gravity through a liquid having known properties as described by Stokes’ law, the SediGraph determines the equivalent spherical diameter of particles ranging from 0.1 to 300 µm.
The new generation SediGraph III Plus combines this proven technique with new technology to deliver reproducible and highly accurate particle size information, completing most analyses in minutes.
The SediGraph III Plus determines particle size distributions and statistics, such as D10, D50, and D90, based on direct mass concentration detection. Basic and advanced reporting available at the touch of a button. The SediGraph III Plus can be coupled with an optional MasterTech autosampler for continuous monitoring of a production process and have data pushed to a network or cloud for remote access.
assures that all of the introduced sample is accounted for, including fractions below 0.1 µm
with that from other particle sizing methods, thus extending the range of reported data to 125,000 µm (125 mm), excellent for geological applications
from bottom to top allows accurate inventory of fast-settling particles while minimizing the time required to resolve the separation of fine particles
increases sample throughput and reduces operator involvement in addition to reducing the opportunity for human error
assure that liquid properties remain constant throughout the analysis so you can be confident of accurate and reproducible results
track the performance of your processes allowing immediate response to fluctuations
The SediGraph III Plus is equipped with a versatile, easy-to-use user interface that provides all of the convenient features you expect from a Windows-based program. These features include point-and-click menus, customizable reports with your laboratory logo graphic, editable graphs, cut-and-paste graphics and tables, data export features, and more. Custom protocols help plan, launch, and control the analysis and assure that subsequent analyses are all performed in the same manner, regardless of the skill of the operator. You can collect, organize, archive and reduce raw data, and store standardized sample information and analysis conditions for easy access during later applications. Finished reports may be generated to screen, paper, or transferred in a variety of formats to storage devices.
Detailed analysis data for particles ranging from 300 to 0.1 µm are provided automatically by the SediGraph III Plus. Data collected from other particle size analyses ranging from 125,000 to 300 µm can be combined with SediGraph data, enabling effective reporting for particles ranging from 125,000 to 0.1 µm.
In addition to tabular data, different graphical analysis plot types are available including:
Plots can be overlaid for comparing the results from different samples or for comparing different plot types from the same sample. This allows you to compare analysis results to a standard. Plots can be rescaled to give you the ability to scrutinize closely your graphical data. A column has been added to the tables and to the x-axis selection in the graphs that reports size in Phi units, where Ф = -log2 (particle diameter in mm). Also, a column selection for settling velocity (cm/s) is available for tables. The x-axis of plots can be scaled in particle size or settling velocity.
The MasterTech 052 Autosampler provides assurance that samples are prepared and analyzed exactly the same way, every time. The MasterTech is designed to increase throughput, repeatability, and reproducibility while reducing operator involvement. Up to 18 samples can be queued to run sequentially and completely unattended, including automatic stirring or sonication prior to transfer to the analysis system. The SediGraph’s operating software controls the MasterTech, and information about dispersion is stored in the sample file for future reference.
The MasterTech features a powerful ultrasonic probe for sample redispersion. Power to the probe tip is adjustable and the driving circuit is self-tuning for maintaining efficient and consistent sonic energy levels. A front-panel digital readout lets you know when the desired power is reached, and that same power is applied each time the method is repeated. The SediGraph III Plus is designed to accommodate the MasterTech on top of the analytical unit, thus conserving valuable bench space.
| Particle Diameter Range | 0.1 to 300 µm Equivalent Spherical Diameter |
| Wetted Materials | Stainless steel, Teflon® impregnated anodized aluminum, nickel plated aluminum, nylon, polypropylene, polystyrene, Tygon® and Pharmed® tubing, tungsten carbide, Ertalyte®, Viton®, Buna-n, and epoxy |
| Sample Size | 50 mL of dispersed sample – precise concentration is not required |
| Suspending Liquids | Any liquid compatible with sample cell materials and not highly absorptive of Xrays (typical liquids are water, glycols, mineral oils, SediSperse®, and alcohols) |
| Power Requirements | 85 to 264 VAC, 47/63 Hz, 450 VA |
| Temperature | Ambient +10 to 40 °C, operating; -10 to 55°C, storing or shipping |
| Humidity | 20 to 80% (non-condensing) |
| Physical | Height: 52 cm (20.5 in.) |
Provided specifications were valid as taken from available documents at time of publication. These specifications may change without notice and are only provided as a general reference
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