Aspect Ratios in Particle Size Analysis

Particles can exist in a myriad of different shapes. This can make conducting particle size analysis (PSA) through laser diffraction difficult as it assumes that particles are spherical. Some examples of minerals whose particles are extremely nonspherical include Wollastonite (rod-shaped) and Garnet crystals (cubic). One important value to keep...

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Slurry Analysis with the Ultrapyc 5000

The Ultrapyc 5000 at the MCL measures the density of samples varying from 0.25 cc to 135 cc in volume, allowing for a wide variety of samples to be tested, including powders, solids, and slurries. Slurries are a suspension of solid in some liquid and are used in a...

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XRD % Crystallinity by the Integration Method

X-ray diffraction experiments can be explained by Bragg’s law. The reflected x-rays from long-range crystallographic order planes can be predicted using the following equation. Where n is an integer, λ is the wavelength of the incident x-rays, d is the inter-atomic spacing, and θ is the angle of incidence....

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XRD Phi Rotation Scanning

X-ray diffraction (XRD) is a powerful analytical tool for industry professionals and material scientists. A source (typically copper) produces x-rays which are directed at a flat sample. These x-rays are diffracted at certain angles by the crystal planes in the material and are detected at those angles. Based on...

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Heat Capacity by the Sapphire Method

The heat capacity of a material is a crucial property to consider when determining its functionality in certain applications. The typical SI unit of heat capacity (Cp) is Joules per gram Kelvin (). It is a measurement of how sensitive a material is to changes in temperature due to...

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