Milling and Sieving
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Механическая ступка RМ 200

Листовка по применению (5)

"the sample" (9)

No. 36
Искусство измельчения - Современные технологии
No. 29
New Product Generation 2007
No. 25
Retsch presents the new Ultra-Centrifugal Mill ZM 200
No. 24
Anniversary issue of the RETSCH customer magazine 10 years "the sample"
No. 14
Preparation and analysis of foodstuffs
No. 05
Crushing: " We learnt it from nature"
No. 02
Particle Size Analysis: "Water is not just for washing!"
Nr. 08
Qualitätskontrolle und Probennahme
Nr. 13
Aufbereitung und Untersuchung von Baustoffen

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Отчеты об измельчении (14)

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From cacao tree to chocolate bar
The way from the cacao tree to the chocolate bar is a long one. Due to the many processing stages – harvest, fermentation, drying, cleaning, roasting, pre-crushing and finally grinding the cocoa nibs to liquor from which cocoa powder and cocoa butter are pressed – there may be significant variations in the quality. The quality control process not only includes testing the innocuousness of the product (e. g. fungi, heavy metal contamination) or the ingredients (fat, carbohydrate content), it also involves size reduction to an adequate particle size for a sensory test of the cocoa liquor. That is important because the human palate perceives particles as small as 30 microns as unpleasant.
Green Chemistry in the Lab
Mechanochemistry is a very effective method to carry out syntheses without solvents and by-products. The technical literature describes a great number of reactions where a conversion of 100% is achieved. A precondition for the establishment of mechanochemistry in the industrial sector is the availability of suitable laboratory mills. A decisive factor is that – similar to conventional preparative chemistry – ambient parameters such as pressure and temperature can be documented and monitored. The Planetary Ball Mills and Mixer Mills from Retsch fulfill these requirements.
Size reduction within the context of sample preparation
In general “size reduction” is taken to mean the disintegration of solid substances by mechanical forces without altering their state.

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Subject to technical modifications and errors