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Good Reasons to Use ATR Libraries

28-08-2005

Transmission spectroscopy was the only method in general use until the early 1960s. The first applications of attenuated total reflection (ATR) or internal reflection spectroscopy were reported independently by Fahrenfort and Harrick. Especially macromolecular materials (rubbers, fibers, fabrics, ...

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Sum parameters "on trail"

Continuous TOC determination in environmental analysis

27-05-2005

Identification of organic pollutants in wastewater is essential for performance evaluation, construction and operation of a wastewater treatment plant. Several parameters are currently used in wastewater analysis applications. The advantages of TOC analyses are apparent especially during ...

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Accurate Mass and TIPTM: Two Dimensions for Elemental Composition Determination: microTOFTM Featuring Unique TIPTM

10-03-2005

The ESI-TOF mass spectrometers micrOTOF and micrOTOF focus do not only provide accurate mass measurements but additionally describe the True Isotopic Pattern TIPTM. For molecular formula generation this unique combination significantly reduces the number of possible formula candidates and the ...

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Beyond Quality Control

Using design of experiments methodology means increased efficiency and improved product quality.

08-03-2005

Product quality in any arena can be traced back to variations in parts, materials, people, and processes. And since it has been observed that all work can be broken down into processes, all processes, manufacturing or administrative in nature, have inherent variability

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Pressure Digestion for Sample Preparation

01-02-2005

What analyst does not wish for a universal method for processing all his or her samples? Pressure digestion represents just such a procedure for sample digestions and is therefore one of the standard sample preparation procedures currently employed in analytical chemistry for element ...

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Reaching the Next Level of Microwave-assisted Organic Synthesis

27-01-2005

Microwave-assisted organic synthesis (MAOS) has become an increasingly popular discipline in modern chemical method development. At first, reaction optimization and method development on a small scale were the main areas of interest in MAOS. However, the growing acceptance and success of this ...

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Half a Century of Chromatography with Agilent and Predecessors

One Century of Chromatography with Twsett (1903)

01-10-2004

Twsett originated the chromatography with his work about the separation of chlorophyll in 1903. For some time it was relatively quite around this new technology. Exceptions were the workings of Kuhn and Lederer (1931) as well as of Hesse (1936 and 1942). A break through succeeded to E. Cremer ...

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SRI Gaschromatographs: "Customized GC" since 1986

30-09-2004

Since 1986 SRI Instruments Inc. (Las Vegas) develops gas chromatography systems with the main objective to build an instrument which can easily be adapted to the customer's needs. The result was a modular built GC which can be equipped with up to six different detectors to cover a wide range of ...

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From Sephadex to GE Healthcare

29-09-2004

The success of chromatography as a technique for separating biomolecules is inevitably linked to the introduction of the gel filtration medium Sephadex(TM) by Pharmacia AB in 1959

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Simulated Moving Bed Chromatography: from chiral molecules to biocompounds

29-09-2004

The Simulated moving bed (SMB) technology was developed in the '60s and used for large-scale separations of hydrocarbons in the oil industry. The SMB concept has been extended towards new fields of application since then, first in the large-scale food industry, e.g. separation of sugars, and ...

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