
Masterclass series
Markes International and SepSolve Analytical are delighted to announce the launch of a new Masterclass series of free-to-attend, in-person events designed to share expertise, showcase advances in analytical science, and help analysts strengthen their workflows for sample extraction and concentration for gas chromatography (GC, GC×GC and GC–MS).
Latest information

Markes International and SepSolve Analytical launch free-to-attend Masterclass series
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Detection of ethylene oxide in medical equipment by headspace–trap with multi-step enrichment and GC–MS
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US EPA and Markes publish study validating OTM-50 method for PFAS destruction
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Free-to-attend Masterclass series from Markes International & SepSolve Analytical
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A straightforward method for the analysis of PAHs in water by high-capacity sorptive extraction and TD–GC–MS
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Why ASTM D7892-2025 is a game-changer for hydrogen purity testing
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Markes International and SepSolve Analytical appoint Gareth Davies as Chief Financial Officer
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Seven surprising aroma insights from "The Science of Taste" at Greenwich
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Detection of residual ethylene oxide and epichlorohydrin in foodstuffs using automated multi-step enrichment–headspace–trap with GC–MS/MS
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Unlocking the secrets of flavour - VOC profiling for food quality and authenticity
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Markes International adds gas sampling bags to support flexible air monitoring and research
Explore![Markes TD Brochure Hero3 Corepurple[2]](/media/zmscvqds/markes-td-brochure-hero3-corepurple-2.jpg?cc=0.55128205128205132,0,0,0&width=350&height=260&v=1d660d04edbcca0)
Automated HiSorb high-capacity sorptive extraction for Centri 90
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What is thermal desorption?
Thermal desorption (TD) is a versatile preconcentration technique for gas chromatography, which is used to analyse volatile and semi-volatile organic compounds from solids, liquids or gases.
Find out more by downloading our introductory e-book which explains more about the technique and it's place in the analytical laboratory

Markes International
Markes International is a multi-award-winning manufacturer of instrumentation and supplies that enhance the analytical capability of GC–MS. Markes has a well-deserved reputation for its technology expertise in the field of sample automation and concentration (thermal desorption, SPME, headspace and high-capacity sorptive extraction). Markes' products are used for the detection of trace-level VOCs and SVOCs in solids, liquids and gases. The company's systems are sold worldwide, through its own global offices and network of distributors. Markes' customers encompass research, government and industrial/service laboratories, in a wide range of sectors from environmental monitoring to materials testing, and food & beverage analysis.
Markes' sister company, SepSolve Analytical Ltd, is a manufactuer of GC×GC, time-of-flight mass spectrometers and associated software