When characterizing materials of different forms and sizes, the knowledge of their particle size distributions is essential, our Sieving Analysis Service can help.
The particle size distribution, i.e. the number of particles of different sizes, is responsible for important physical and chemical properties such as solubility, flowability and surface reaction. In many industries such as food, pharmaceutics and chemistry traditional sieve analysis is the standard for production and quality control of powders and granules.
Single sieving is carried out with one test sieve of a defined mesh size and is used to determine the percentages of undersize and oversize. It is used to get a general
idea of the sample characteristics (sieve cut).
If more fractions are required, a set of sieves is used. The sieves are arranged in a stack with the mesh size increasing from bottom to top. The sample is then placed on the top sieve.
With vibratory sieving, the sample is subjected to a 3-dimensional movement, i.e. a circular motion superimposes the vertical throwing motion. Due to this combined motion, the sample material is spread uniformly across the whole sieve area. The particles are accelerated in vertical direction, rotate freely and then fall back statistically oriented.
At ITA Labs we use a Retsch AS 200 Digit Analytical Sieve Shaker, which can be used with a single sieve or a stack of up to 8 different mesh sizes.
If you’re looking for a sieving service and would like to discuss your potential requirements, call Alastair on 01727 871301.
+44 (0) 1727 871301
