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Detection and absolute quantification of metabolites

TSQ Quantum XLS extends the range of Thermo Scientific mass spectrometry solutions for metabolomics applications



VCD offers a novel route to absolute chirality determination

Hiroshi Izumi, Atsushi Ogata, Laurence A Nafie and Rina K Dukor look at determination of absolute configuration of chiral molecules by vibrational circular dichroism.



Absolute Size Exclusion Chromatography

Size Exclusion Chromatography is a common technique in biochemistry laboratories and routinely used for purification, identification, and quantification of protein mixtures.



Measuring absolute molar mass and physical size of polymers

As the properties of a polymer can depend greatly on its size, there has always been a need to be able to measure it, both in terms of molar mass and physical size. The earliest polymers studied were materials such as elastomers and, later, synthetic polymers like polyethylenes or polypropylenes. The range of samples studied has since increased enormously with the realisation that many biological functions are also controlled by molar mass, size and shape.



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