Vibro-broyeur MM 400
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Brochure générale
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Broyeurs à billes
MM 200 / MM 400 / PM 100 CM / PM 100 / PM 200 / PM 400 / PM GrindControl
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Mixer Mill MM 400
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Cryogenic Grinding
Du plomb dans les jouets ? Un contrôle s’impose.
Une grande partie des jouets vendus sur les marchés américains et européens est fabriquée en Chine. Or ceux-ci connaissent de vives critiques en ce qui concerne la qualité au vu de la présence de matières potentiellement dangereuses, susceptibles d’aboutir à des actions de rappel et réclamations de dommages et intérêts onéreuses. Plus les cas signalés sont nombreux, plus les consommateurs hésitent à acheter des articles venus de Chine, ce qui justifie donc un contrôle sans failles dans l’intérêt des fabricants. Depuis l’entrée en vigueur de la directive européenne RoHS (Restriction of Hazardous Substances), la limitation de l’utilisation dans les biens de consommation de substances telles le plomb, le cadmium ou le mercure, est clairement réglementée.
Bigger is not Better
There is a trend towards smaller samples that have more controlled particle size and yet remain representative of the material being analyzed.
Cryogenic disruption of yeast cells
The MM 301 can be used for cell disruption applications. In this case, yeast cells were embrittled with liquid nitrogen.
Cryogenic preparation of sample materials
Within the context of sample preparation, size reduction plays an important role as it has a substantial influence on the results of the subsequent analysis. If the particles are too coarse or inhomogeneous the results of the analysis may turn out to be incorrect, especially if there is only a very small amount of sample material which represents the total amount.
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.
Making Whole Cell Extract of Saccharomyces cerevisiae
Preparation at the Courtesy of the Staley Lab at the University of Chicago
Sample Preparation of Solid Materials for the XRF-analysis
X-Ray fluorescence is one of the most versatile methods to determine elements in a sample. The material is exposed to x-rays that cause each element to emit its own unique fluorescent x-ray. The subsequent analysis of the results is based on comparisons to standard samples with given chemical composition.
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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NEW Biotech
Sample Preparation for the Biotech Industry
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NEW Soil
Sample Preparation for Soil Testing
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Cement, Ceramic and Glass
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Pharma
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Pharma (insert)
Sample Preparation for Pharmaceutical Testing
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Plastics
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Sample Preparation for Heavy Metal Analysis RoHS / WEEE
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MM 400
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Material Analyses of Grinding Tools
Subject to technical modifications and errors
