Determination

Products Determination

Testing on the safe and eco-friendly side

Take advantage of Merck's broadest selection of products for disinfection and residue analysis - and rest easy knowing that our environmentally friendly products are totally safe for lab use more

Real Time TOC Analytics

The high measuring performance of the Thornton 5000TOC sensor provides very short response times in combination with easy handling and low maintenance more

Separate proteins faster

Proteins can be analyzed or purified up to 3x faster with pressure-resistant glass columns of KNAUER Bioline and specially reinforced agarose media more

Videos Determination

Real Time TOC Analytics

The 5000TOC sensor utilizes the well-proven principle of dynamic UV oxidation. Compared to batch oxidation the 5000TOC provides a real measuring result every 3 seconds. The reaction time is extremely short. A change of the TOC content is detected within 1 minute. Hence, the water quality is really c more

News Determination

• The Innovation Prize Berlin Brandenburg 2012 was awarded to LUM
  

  The Innovation Prize Berlin Brandenburg 2012 was awarded to LUM GmbH for the new Adhesion Analyser LUMiFrac®. Adhesive and tensile strength of composite materials, multi-layer films and bonded parts are determined online by the award-winning LUMiFrac®. Starting as an idea for a more simple and objec more

• LUM is nominated for the Innovation Award Berlin-Brandenburg 2012

  LUM GmbH is nominated for the Innovation Award with the new Adhesion Analyser LUMiFrac. From more than 100 applications LUM was nominated into the final five candidates. With the LUMiFrac® LUM, currently known as market leader in innovative analysers for direct and accelerated stability analysis and more

• BP Returns to Profit in Third Quarter with Strong Operating Performance

  BP announced that a strong operating performance across the group helped it return to profit in the third quarter of 2010 despite an additional pre-tax charge of $7.7 billion in respect of the Gulf of Mexico spill. Headline replacement cost profit for the third quarter was $1.8 billion, compared wi more

White papers Determination

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

  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 elemental composition of compounds with molecular weights far higher than 500 Da can unequivocally be determined more

• Field-Flow Fractionation - The Universal Separation Principle for Particle and Macromolecule Characterization
  

  High molecular weight polymers, bio molecules or particles in a range of a few nanometers up to several microns are more and more important in science and technology. Many applications are based on the specific properties of these materials. For this reason, an exact knowledge of the molar mass or particle sizes distribution is essential for later application as well as for optimization of the production processes or quality control. In addition the knowledge about the chain structure of macromolecules or biopolymers as well as about the shape of particles is often necessary. For this reason those samples, which often can be very complex systems, have to be separated according to parameters such as e.g. hydrodynamic volume or molecular weight. After the separation process the resulting narrow dispersed fractions are detected with different techniques. more

• Size and element specific determination of Ag nanoparticles in consumer spray products using asymmetric flow field flow fractionation (AF4) coupled to ICPMS
  

  The use of nanoparticles in consumer products shows a tremendous increase over the past years. A study of the Woodrow Wilson International Centre for Scholars reported that between 2005 and today the number of products based on nanoparticles increased almost twentyfold from 54 to 1015. As active compounds these products contain ZnO for surface protection, TiO2 for sun screen or Ag for anti-bacterial purposes, only to name a few applications. Furthermore, Si, C and Au are frequently used. So far, no data are available concerning the release and the behaviour of nanoparticles during the spray process. Therefore, in spite of their beneficial properties, possible risks for humans and the environment need to be thoroughly investigated. Especially the exposure pathway via the lung seems to be very critical, as could be shown in a study recently published in the Journal of Nanoparticle Research more

Publications Determination

• On-Line Microfluidic Device Coupled with Inductively Coupled Plasma Mass Spectrometry for Chromium Speciation

  In this study, an on-line polyoxometalate cluster (POM)/microfluidic (MF) separation system coupled with inductively coupled plasma mass spectrometry (ICP-MS) detection was developed for the determination of trivalent [Cr(III)] and hexavalent [Cr(VI)] chromium species in aqueous samples. In this sys more

• Precise determination of the Poisson ratio in soft materials with 2D digital image correlation

  In this article, we demonstrate the application of digital image correlation (DIC) in evaluating the strains and Poisson ratio of a range of soft materials in terms of their spatial and temporal resolutions. Homogeneous samples of polydimethylsiloxane (PDMS) elastomer were used as control substance more

• Diffuser-Incorporated Transmission NIR Measurement for Reliable Analysis of Packed Granular Samples

  A diffuser-incorporated transmission near-infrared (NIR) scheme that enables direct spectral collection of packed granular samples with reliable sample representation and reproducibility has been demonstrated. The analytical utility of this method has been evaluated for the determination of polyethy more

Websites Determination