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Family-owned in the second generation since its founding in 1967, GERSTEL is focused on developing and producing systems and solutions for chemical analysis. The main focus is on automated sample preparation for Gas Chromatography / Mass Spectrometry (GC/MS) and Liquid Chromatography / Mass Spectrom more
DataApex is an independent software company with expertise in developing and manufacturing chromatography data stations. Its solution includes genuine hardware & software and high quality technical support. DataApex chromatography data stations are used for data acquisition, data processing and in more
Schambeck SFD GmbH was founded in 1991. We produce and sell instruments and spare parts for High Performance Liquid- and Gaschromatography. Our products are worldwide available through authorized dealers. 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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