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Wednesday, April 28, 2021

More Principles of Particle Reduction

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Tuesday, March 09, 2021

Principles of Particle Reduction

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Friday, February 12, 2021

Introduction to Sample Preparation: Homogeneity

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Wednesday, September 23, 2020

Using the Freezer/Mill for Microplastics Research

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Friday, September 11, 2020

Geno/Grinder Used in Vaccine Research

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Archives

Principles of Particle Reduction

Tuesday, March 09, 2021

The most common method for obtaining a homogeneous sample is grinding of comminution. Grinding samples has many benefits for sample preparation since it increases homogeneity, increases surface area and decreases particle size which can improve extraction efficiency. Some of the negatives regarding grinding samples are: potential contamination, increase in moisture, evaporation, loss or alteration of volatile compounds or labile constituents, and safety issues regarding grinding.

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Introduction to Sample Preparation: Homogeneity

Friday, February 12, 2021

Sample preparation is the process where a representative piece of material, chemical or substance is extracted from a larger amount, bulk or batch for subsequent analysis. Representative samples are selected to accurately reflect the larger group and represent the characteristics of the whole material. Ideally representative samples are homogeneous or similar in nature, but when that is not possible, the best attempts must be made to achieve samples which represent the majority of the characteristics of the larger grouping.

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