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CPS Instruments - Worlds leading Disc Centrifuge Manufacturer

Technical Library

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Note: this page is always under construction; not all documents are yet available; check www.cpsinstruments.com for more information.


Promotional Literature

Technical Support Documents

  • CPS Disc Centrifuge Operating Manual (English) - the most up to date version available; mainly for existing customers who want to update their Operating Manual.

  • CPS Disc Centrifuge Quick User Guide (English) - the most up to date version available; explains how to set up the instrument and how to run a sample.

  • CPS Disc Centrifuge Operating Manual (German) - the most up to date version available; mainly for existing customers who want to update their Operating Manual (provided by LOT-QD).

  • CPS Disc Centrifuge Quick User Guide (German) - the most up to date version available; explains how to set up the instrument and how to run a sample.

  • CPS Disc Centrifuge Operating Manual (French) - the most up to date version available; mainly for existing customers who want to update their Operating Manual (provided by LOT-QD).

  • Glossary of Particle Sizing defines most of the common terms used in the particle sizing field. This document will be helpful if you are new to particle sizing and need to become familiar with the terminology. You may also want to refer to this document if you are unsure about the meaning of any terms used in the other documents offered here.

  • Principles of Particle Size Analysis covers some of the basics of particle sizing, including the different types of size distributions, the differences between common sizing methods (how they work!), and the kind of distribution information each method yields.

  • Introduction to Differential Sedimentation describes in some detail how size distributions are measured using differential sedimentation. Key subjects include Stokes' Law, instrument layout, sedimentation stability, function of a density gradient, and size resolution with differential sedimentation.

  • Comparison of Particle Sizing Methods offers an honest evaluation of the strengths and weaknesses of several common particle sizing methods, including basic theory of operation.

  • Measuring Low Density Particles via Differential Sedimentation describes how the patented CPS Low Density analysis method works, and how it allows you to characterize the size distribution of particles of virtually any particle density, including particles that are neutrally buoyant in their suspension medium. The Low Density method expands the range of applications for differential sedimentation to include oil in water emulsions, liposomes, and low density polymers.

  • Centrifuge Speed Ramping covers the use of speed ramping (gradual speed increase) to expand the single run dynamic range in the CPS Disc Centrifuge. Dynamic range can be easily expanded to 1000, which makes analysis of samples with very broad distributions practical using differential sedimentation.

  • Ultra-high Resolution Size Analysis examines how differential sedimentation can be used to generate size distributions where the measuring process contributes very little to the reported distribution width. Ultra-high resolution analysis is suitable for characterizing samples with very narrow peak(s), such as size calibration standards, or for samples where narrow peaks are closely spaced.

  • Maximizing Baseline Stability explains the common causes for baseline drift in the CPS Disc Centrifuge and examines how to minimize drift. An absolute minimum of baseline drift allows accurate measurement of samples with very weak signals and/or very long analysis times.

Application Notes

These documents provide descriptions of common applications for sedimentation based size distribution analysis. Each of the applications includes analysis conditions and example results.

  • Measuring Polymer Dispersions

  • Acrylic Latexes

  • Poly Vinylchloride Latexes and Dispersions

  • Spray Dried PVC Polymers

  • Poly Vinylacetate Latexes

  • Poly Styrene Latexes

  • Poly Butadiene-Styrene Latexes

  • Silver Halide Emulsions Latexes

  • SiO2 Dispersions (for CMP)

  • Toners for Printers and Copiers

  • Titanium Dioxide Pigments

  • Virus Particles (and Virus-Like Particles)

  • Protein Clusters

  • Calcium Carbonate Fillers

  • Oil Emulsions

  • Iron Oxide Pigments

  • Carbon Black

Other Applications

If your application (or something similar) is not among those described above, please contact CPS Instruments Europe. We will be happy to discuss your application and make recommendations for characterizing your samples, even if the best method is not based on sedimentation analysis.



Disclaimer: The information contained in all downloadable documents from CPS Instruments Europe is believed to be completely accurate and is presented in good faith. However, no warrantee or guarantee as to the accuracy of the information is given by CPS Instruments Europe and CPS Instruments, Inc. nor any of it's distributors.