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Sample Preparation and Sieve Analysis

RETSCH instruments are used in science and industry for the sample preparation for a wide range of different analytical methods as well as for particle size analysis in the context of production control and quality monitoring.

RETSCH meets the ever-increasing demands in these fields with a clear product philosophy: "The whole is greater than the sum of its parts"

In accordance with this principle we not only use high-quality components, but also place great value on their perfect interaction. The results are instruments characterized by their superior technology and outstanding reliability for each individual application in sample preparation and particle size analysis. This philosophy is reflected throughout the whole range of RETSCH products, which are arranged in three segments:

Put the squeeze on

Sieving is cost effective for particle sizes greater than 75 μ, although the technique can be used for some materials of smaller size if the method can be validated. Assuming the relevant standards and clean, wellmaintained equipment that conforms to the standards are used, sieving can provide an accurate and reproducible measure of particle size distribution within a sample.

SAMPLE PREPARATION IS NOT AN exact science; laboratory sub-sampling and sample splitting are prone to errors. These errors are due to heterogeneity either in the composition of the material, or in the non-random particle size distribution, which usually occurs as a result of gravitational forces. Any samples used for analytical testing must accurately reflect the composition of the original bulk material. If the initial particle size of the bulk material is too large, obtaining a representative sample is virtually impossible. (...)

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