The US-Sedimentometer USS 791 from Topas GmbH Dresden, Germany applies the sedimentation principle in suspensions to determine the particle size distribution of samples. The correlation between particle size and sedimentation rate due to gravity allows an accurate assessment.
The sedimentation rate is also influenced by the specific gravity, the particle shape and the density and viscosity of the suspension. All of these values must be available in order to get accurate results. The operating principle is based on measuring the time in which certain quantities of sample accumulate in a calibrated tube. The particle size distribution is then calculated by applying Stokes’ law.
The operating principle of the US-Sedimentometer USS 791 is based on an internationally recognised method to characterise particle properties of electro-corundum and silicon carbide and is used to determine particle size distributions of these materials. This method is part of the FEPA-Standard 43-D, which defines properties for electro-corundum and silicon carbide in coated abrasives, part 3 testing of P240 to P2500 and also the FEPA-Standards 42-D for conventional abrasives, part 3 testing of F230 to F1200.
Further applications for the USS 791 are sedimentation analyses in other areas of quality assurance as well as research institutes and universities.
The main advantages of the USS 791 are:
- Fully automated analysis with minimal operator input
- User friendly Software (USSWin) enables visualisation, processing and storing of measured data
Topas GmbH Dresden
Automated Sedimentation Analysis
The US-Sedimentometer USS 791 from Topas GmbH Dresden, Germany applies the sedimentation principle in suspensions to determine the particle size distribution of samples. The correlation between particle size and sedimentation rate due to gravity allows an accurate assessment.
The sedimentation rate is also influenced by the specific gravity, the particle shape and the density and viscosity of the suspension. All of these values must be available in order to get accurate results. The operating principle is based on measuring the time in which certain quantities of sample accumulate in a calibrated tube. The particle size distribution is then calculated by applying Stokes’ law.
The operating principle of the US-Sedimentometer USS 791 is based on an internationally recognised method to characterise particle properties of electro-corundum and silicon carbide and is used to determine particle size distributions of these materials. This method is part of the FEPA-Standard 43-D, which defines properties for electro-corundum and silicon carbide in coated abrasives, part 3 testing of P240 to P2500 and also the FEPA-Standards 42-D for conventional abrasives, part 3 testing of F230 to F1200.
Further applications for the USS 791 are sedimentation analyses in other areas of quality assurance as well as research institutes and universities.
The main advantages of the USS 791 are:
- Fully automated analysis with minimal operator input
- User friendly Software (USSWin) enables visualisation, processing and storing of measured data
- standard serial interfaces of the instrument
For more information, please visit:
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Photo:
US-Sedimentometer USS 791
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