SediGraph III Plus, Micromeritics technology

Ceramics: The size range of particles and the distribution of mass in each size class strongly affect the ability to sinter a ceramic powder and it’s forming properties as well as the pore size distribution in the finished product. Particle size distribution information helps to determine curing and bonding procedures, control pore structure, ensure adequate green body strength, and produce a final product of desired strength, texture, appearance, and density.

Metal Powders: By controlling particle size, very specific pore characteristics can be designed into a product. Porosity characteristics often are the key to product performance. Similar to ceramics, the particle size distribution is critical to green body and final product strength and density.

Geological/Soil Science: Grain Size affects the moisture-holding capacity of soil, drainage rate, and the soil’s ability to hold nutrients. Grain size is directly related to transport of sediment.

Cosmetics: The appearance, application, and packaging of cosmetics are influenced by the particle size distribution of base powders, such as talc, and the pigments used for coloring.

Pigments: Particle size alone can affect the tinting strength of a color. As tinting strength goes up, the quantity of pigment needed to produce required color intensity goes down. The particle size affects the hiding power of the paints. Also the particle size distribution influences gloss, texture, color saturation and brightness.

Catalysts: Particle size affects the catalytic activity of a metal for structure-sensitive catalytic reactions.

Construction Materials: Particle size of cement affects setting time and strength characteristics of finished concrete and cement.

Minerals and Inorganic Chemicals: Reactivity of materials is dependent upon exposed surface area and thus particle size distribution.

Abrasives: A properly balanced size distribution of abrasive grains and powders is a fundamental consideration whether the material is to be used in slurries, dry blasting, or bonded abrasive tools. Uniform particle size assures precise flow rates through blast machines and is a critical determination in media management when recycling the abrasive material.

What is the SediGraph used for?

The SediGraph measures particle size distributions of powders and suspensions by determining particle settling rates in a liquid. It is particularly effective for particles in the submicron to hundreds of microns size range.

How does the SediGraph measure particle size?

The instrument uses X-ray absorption to monitor the concentration of particles as they settle through a liquid. Particle size is calculated based on settling velocity using Stokes’ Law.

What particle size range can the SediGraph measure?

Depending on the model and sample properties, the SediGraph can typically measure particles from approximately 0.1 µm to 300 µm.

What types of materials can be analysed?

The SediGraph is suitable for a wide range of materials, including minerals, ceramics, pigments, catalysts, battery materials, pharmaceuticals, cement, and industrial powders.

Which industries commonly use the SediGraph?

The SediGraph is widely used in mining, minerals processing, cement production, battery manufacturing, advanced materials, chemicals, pharmaceuticals, and academic research laboratories.

What sample preparation is required?

Samples are dispersed in a suitable liquid medium using mechanical stirring, sonication, dispersants, or other methods to achieve a stable suspension before analysis.

How long does a typical analysis take?

Analysis times vary depending on the particle size range being measured, but most measurements can be completed within 15 minutes to a few hours.

Can I have a demonstration of the Sedigraph?

Yes, if a system is available. Contact us for a booking. We can arrange a personalised demo and test your samples within our lab facility in Sydney. Contact us for a demo.