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Pharma
Acrylamide Analysis in Food

情報誌 "the sample" (10)

No. 37
NEW DIMENSIONS in sample preparation and particle analysis

No. 36
粉砕はアート－現代の粉砕技術

No. 34
2009年
新製品

No. 31
レッチェ・グランプリ＆２００８年新製品のご紹介

No. 29
新製品　2007年　新発売 GOLD　RUSHｷｬﾝﾍﾟｰﾝ

No. 28
Think big but grind fine!大型粉砕機特集号。

サンプル特別版 II

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. 37
UNA NUEVA DIMENSIÓN en la preparación de muestras y análisis granulométrico

アプリケーションレポート (15)

エアジェットシーブAS200ジェットを使った凝集粉末の分級
エアジェットシーブは、40μm以下の非常に細かい粉体の乾式分級に広く用いられています。また、振動式のふるい振とう機に比べて極めて短時間で分級ができるので、250μmまでの粉体にも広く採用されています。

ナノ粉砕
ナノ粒子（直径100nm未満の非常に細かい粒子）は、長年研究されてきたテーマです。ナノ粒子については、半導体やロータス効果のように表面特性などの新しい可能性が開かれ、以前は知られていなかった新しい革新的な技術も開発されてきました。ナノ粒子をつくりだすには、様々な方法があります。“ボトムアップ” 方式は、原子・分子レベルから合成させる方法です。一方、 “トップダウン”方式は、粉砕によって粒子をナノサイズまで微細化する方法です。この方法に適したものがレッチェの遊星ボールミルPM100、PM200およびPM400であり、ナノスケールまでの粉砕力があります。

クライオミルを使った揮発性物質を含んだ試料の粉砕
試料調製の際に、常温での粉砕よりも凍結粉砕機を使ったほうが適している場合がありま
す。液体窒素で凍結された試料は脆化されるので、衝撃・摩擦などで粉砕されやすくなり
ます。さらに、試料中の揮発性物質も保持できます。
レッチェのクライオミルは、最新の安全な凍結粉砕機で優れた粉砕結果をお約束します。

What Hair Reveals
The detection of illegal drugs and pharmaceuticals plays a role in various fields, for example in forensic science, road traffic accidents, in competitive sports or at the workplace. Chemical substances can be detected in blood, saliva, urine and in hair. Hair has the great advantage of storing the substances for a long period, which means that detection is still possible several months after consumption of the drug. In addition to the detection of drugs, hair samples are also used for DNA analysis as well as for the analysis of heavy metals and minerals.

Representative results require adequate sample preparation
The following situation is typical for many production plants: After a routine quality check, the production process is stopped or an already produced batch is suspended, because the analysis results were not within the relevant critical values. But does the tested product really deviate from the specifications? The quality control managers are convinced of this because modern analysis instruments provide results with very low tolerances. The sample in question was tested several times and the result was confirmed. The question is why the product does not match the specifications although the production parameters have not been changed in any way.
The possibility that the tested product is indeed deficient cannot be excluded. However, it is often not the product itself which causes irregular analysis results but a lack of understanding of the steps which come before the analysis.

Powerful Cutting Mill
The SM 300 excels especially in the tough jobs where other cutting mills fail. It has a freely selectable speed range from 700 to 3,000 rpm with high torque. The mill is convenient to operate and easy to clean. Reliable and extremely efficient sample preparation in the laboratory is now guaranteed with the SM 300.

Air Jet Sieving of Bulk Materials
Particle size analysis and particle size distribution are important criteria for the quality control of bulk materials. In a running production process, the results of a quality check must be available quickly to allow for immediate adjustment of the production parameters. Depending on the expected particle size and sample volume, different sieving methods and sieving machines are suitable for analysis. The method used for particle size analysis is primarily determined by the fineness of the material to be sieved. For dry sieving of samples with particle sizes below 40 microns, air jet sieving is the method of choice.

Efficient Grinding at –196 °C
RETSCH’s New CryoMill for Safe and Reproducible Grinding with Liquid Nitrogen

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.

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.

Reliable sample preparation in food technology
An efficient sample preparation procedure for rapid, reliable and reproducible analytical results is becoming increasingly important today. Ever more stringent requirements are being set both in research and production, e.g. for product monitoring and quality control.

Höchstleistung im Doppelpack
Mit der PM 100 und der PM 200 präsentiert Retsch eine neue Generation von Planeten-Kugelmühlen mit einer bzw. zwei Mahlstellen, die in diesem Produktsegment neue Leistungsstandards setzen.

Schnell und schonend zerkleinern
In zahlreichen Labors werden täglich viele unterschiedliche Probenmaterialien aufbereitet. Für die Zerkleinerung von Feststoffproben auf Analysenfeinheit wird eine Mühle benötigt, die nicht nur vielseitig einsetzbar und leicht zu reinigen ist, sondern die auch eine reproduzierbare Probenvorbereitung – und damit zuverlässige Analysenergebnisse - garantiert.
Mit der Ultra-Zentrifugalmühle ZM 200 bietet RETSCH eine Rotormühle an, die nicht nur sehr schnell, sondern auch äußerst materialschonend zerkleinert und, dank einer umfangreichen Zubehörpalette, universell einsetzbar ist. Mit ihrem kraftvollen Powerdrive-Antrieb vermahlt die ZM 200 weiche bis mittelharte und faserige Materialien extrem schnell auf Endfeinheiten bis unter 100 µm und steigert so den Probendurchsatz im Labor.

Molienda ultrarrápida y ultrafina
El nuevo molino ultracentrífugo ZM 200 de RETSCH es un molino de rotor no sólo extremadamente rápido y cuidadoso con el material molido, sino también de uso universal gracias a su amplia gama de accesorios.

Soluções para controle de qualidade farmacêutica

プレスリリース (1)

Versatile Ultra Centrifugal Mill with New Cyclone
RETSCH’s powerful and versatile ZM 200 offers the ultimate in performance and operating comfort. It is used for the rapid size reduction of soft to medium-hard and fibrous materials down to 40 microns. Because of the efficient size reduction technique and the comprehensive range of accessories the ZM 200 ensures the gentle preparation of analytical samples in a very short time.
For applications which require an optimum air throughput (e. g. heat sensitive materials) or if larger sample volumes need to be processed, the use of a cyclone is recommended. RETSCH offers a re-designed cyclone with improved functionalities for collector volumes from 250 ml to 5 liters which adds to the ZM 200’s great flexibility.
Thanks to the wide range of accessories with different rotors, ring sieves and collectors, the ZM 200 can be easily adapted to suit a wide range of applications such as, for example, heavy-metal-free grinding, size reduction of abrasive materials or processing small volumes up to 20 ml.