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ERC GmbH was founded more than 35 years ago. Leading manufacturers cooperate exclusively with us as distribution partner. Our measuring instruments are Europe wide used in the field of research to quality control. We were the first company in Germany to introduce degassers and the refractive index more
BÜCHI Labortechnik is a globally operating privately held company headquartered in Switzerland. Founded 1939 as a glass blowing workshop BÜCHI is offering laboratory equipment, analytical systems and NIR technology. Since 1978 the German BÜCHI Labortechnik GmbH serves its customers and lab dealers w more
For over 20 years, Advion has been developing and producing user-friendly, modular mass spectrometric systems, enabling a variety of applications. In the focus of the analyses are molecular compounds - both organic and inorganic - which are made available to mass spectrometric detection by ‘soft ion more
Publication date: Available online 14 September 2013 Source:Organic Geochemistry Author(s): Daniel B. Nelson , Julian P. Sachs Three methods are presented on how to purify acetylated sterols, acetylated triterpenols and individual alkenones for hydrogen isotope analysis from marine and lacus more
Microdialysis coupled to HPLC is the preferred method for quantification of glutamate (Glu) concentrations, both in normal and pathological conditions. However, HPLC is a time consuming technique that suffers from poor temporal resolution. Here we describe an alternative method to measure glutamate more
Gas chromatographic analysis revealed that the oil of Crinitaria tatarica was rich in sabinene (32.1%), β‐pinene (8.8%), and two unknown (M+200) compounds (I) and (II) (21.4% and 3.4%). One‐step multiple fractionation of the oil and separation of two unknown constituents were performed using prepa more
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