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Technical papers, application notes and case studies from laboratory, chemistry, life science and quality control

Shimadzu Europa GmbH
Emission measurements of glow sticks in party bracelets
Marion Egelkraut-Holtus, Shimadzu Europa GmbH
Glow sticks are increasingly popular at major events like concerts, carnival sessions or New Year's Eve parties - even birthday parties. But they are also used in high-performance applications, for instance for illumination purposes in professional diving processes. Or in general, as a light sour...

PerkinElmer Inc.
Analysis of Micronutrients in Fruit Juice Using the Avio 200 ICP-OES
Nick Spivey, PerkinElmer Inc.
Fruit juice continues to be a popular and refreshing beverage and can be a better nutritional alternative than typical carbonated beverages. The nutritional content of 100% fruit juices is derived from the fruit itself, and these valuable nutrients are displayed on the detailed bottle label. Cust...

Pulveranalyse GbR
Measurement of electrostatic stability of various TiO2 dispersions in laboratory
Daniel Moog, Pulveranalyse GbR
Titanium dioxide can be utilized in various applications such as pigment base in paints, coatings, plastics and laminates. During both, the production process at the TiO2 producer and the manufacturing process of paints, coatings and composite materials, avoiding the coagulation and agglomeration...

Eppendorf SE
The Tip of the Iceberg: How Pipette Tips Influence Results - Perfect Geometry Makes a Difference
Ulrike Gast, Laura Koch, Eppendorf SE
We performed a study including standard tips from different manufacturers in order to investigate the tip-related influences on the pipetting result. The study showed a dramatic impact of the tip on the pipetting accuracy. Small volume pipetting accuracy is significantly influenced by the quality...

Metrohm International
It's all made of plastic! - Analysis of polymers using Raman-Spectroskopie
Metrohm International
"Plastic" has become something of a dirty word. It makes us think of trash and environmental pollution, inferior quality, mass-produced goods, and excess. But if you take a look around, you will realize that a lot of the objects that surround us - including those that we couldn't live without - a...

Shimadzu Europa GmbH
Tracing contaminants in polymeric kitchen utensils - Evidence of WEEE relevant substances in polymeric food contact articles (FCAs)
Jan Knoop, Marion Egelkraut-Holtus, Shimadzu Europa GmbH
Franky Puype, Institute for Testing and Certification, Zlin, Tschechische Republik

The amount of polymeric waste is increasing steadily, due for example to shorter life cycles of many technical consumer products. This is why recycling of polymeric/plastic waste becomes more and more important. This process has to be carried out in a secure way, otherwise hazardous substances or...

Eppendorf Application Technologies S.A.
The Tip of the Iceberg: How Pipette Tips Influence Results
Muriel Art, Vincent Dufey, Eppendorf Application Technologies S.A.
Ulrike Gast, Eppendorf SE

The fact that a tip fits onto a pipette cone does not say anything about the performance of the pipetting system comprising the components "Pipette and Tip". We performed a study including standard tips from 15 different manufacturers in order to investigate the tip-related influence on the pipet...

Leica Microsystems GmbH
HyVolution - Super-resolution Imaging with a Confocal Microscope
Dr. Rolf T. Borlinghaus, Dr. Constantin Kappel, Leica Microsystems GmbH
Since the invention of the microscope, there has been continual discussion about the possibility of showing more detailed features of specimens as compared to just magnifying them. Ernst Abbe was the first to explore the issue in depth and found there was a limit to the size of details visible in...

3T analytik GmbH & CO. KG
QCM-D technology as a new platform for real-time monitoring in biology, medicine and engineering
Dr. Paula Braun, Dr. Frank Gehring, 3T analytik GmbH & CO. KG
QCM-D technology is a surface-sensitive technique for real-time monitoring and characterization of (bio)-layers on a surface with regard to adsorption and desorption events, molecular interactions and structural properties. To date, this old-established technique is becoming increasingly importan...

Chemisches und Veterinäruntersuchungsamt (CVUA) Stuttgart
Determination of Phomopsin A in Lupin-Containing Food, Using UHPLC-MS/MS
Eric Eichhorn, Stefanie Marschik, Chemisches und Veterinäruntersuchungsamt (CVUA) Stuttgart
Phomopsin A, a secondary metabolite of the mold Diaporthe toxica, showed severe toxic effects in animal studies with potential relevance for human health. This lead to the establishment of a legal maximum amount for phomopsin A of 5 µg/kg in lupin seeds and their products by the Australian and Ne...

Shimadzu Europa GmbH
Determination of PAHs or mineral oils in water using fluorescence spectroscopy - Simple analysis with high detection limits according to ASTM D 5412
Marion Egelkraut-Holtus, Shimadzu Europa GmbH
What do drinking water and wastewater have in common? Contamination. With wastewater, it's likely to think about the total sum of contamination, whereas with drinking water more detailed information on contaminations at trace level may be obtained. Contaminations in drinking water are considered ...

Measurement of the migration of low-molecular substances from food packaging
Werner Zillger, LABC-Labortechnik
Food packaging protects contents such as perishable goods. It carries information, both for the consumer and the entire supply chain down to the retail business. Many foods cannot be stored and thus marketed without suitable packaging. Consumers first see the packaging on the supermarket shelf. T...