A szitaanalizis es a Digitta szemcsemeret analizator osszehasonlitasa.
1991
Lengyel S. | Szalma E. | Heim A.
Forty bar goods and 10 cacao powder samples were investigated for particle size distribution by wet sieve analysis and DIGITTA automated particle size analyzer. The disadvantage of sieve analysis is that it requires much time and reagents. The sieves may suffer damage, they are difficult to clean and dry, it is difficult to filter suspensions through sieves of smaller mesh, fat globules may plug the mesh, and processing the results requires much time and labour. The advantages of the method lie with the low investment requirement, with analyzing a large number of particles, and with the results for identical materials being closely approximate. Disadvantages of the DIGITTA analysis are its high investment requirement, sensitivity to the density of suspension, and a single large particle may change the cumulative frequency function diagram, but advantages are its low time and reagent requirement, reagents are not deleterious to human health, requirement of utensils is low, the mathematical statistical data processing is carried out by the program, and it is suitable for analysis of other materials beside chocolate, cacao and nougat. It can be used for the analysis of every material with particle size between 10 and 160 microgm diameter.
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