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Markes International Ltd

Markes International is a specialist provider of technologies and expertise that enable chemists to meet analytical challenges in the sampling and detection of trace-level organic compounds. As a long-standing leader in analytical thermal desorption, Markes manufactures a comprehensive range of instrumentation, sampling equipment and consumables that enhance the capability of GC–MS. Markes has also gained recognition for its BenchTOF range of time-of-flight mass spectrometers for GC, ground-breaking Select-eV ion-source technology, and associated software.

Markes International Ltd
Gwaun Elai Medi-Science Campus,
Llantrisant, RCT, CF72 8XL, UK        
Tel: +44 (0)1443 230935
Email: [email protected]

Company website

Content by Markes International Ltd:

Fields & Applications Mass Spectrometry

Aroma Profiling of Strawberries

| Sponsored by Markes International Ltd

This Application Note describes the fast and highly sensitive detection of trace-level aroma compounds in the headspace gas above fresh strawberries.

HiSorb™ high-capacity sorptive extraction phase evaluation for aroma and flavour profiling of honey

| Contributed by Markes International Ltd

HiSorb high-capacity sorptive extraction probes provide a highly sensitive, robust and fully automatable means of extracting organoleptic compounds.

Authentic or synthetic? Discovering authenticity markers in luxury to low-cost honey varieties using a high-capacity sorptive extraction technique (HiSorb™)

| Contributed by Markes International Ltd

This study demonstrates how sorptive extraction using high-capacity HiSorb probes was used to extract aroma compounds spanning a wide volatility range

Flavour profiling of hard seltzers and identification of potential quality markers using HiSorb™

| Contributed by Markes International Ltd

A fully automated workflow – from sample extraction to data analysis – was used for the flavour profiling of four different brands of hard seltzer.

Advantages of using tube-based thermal desorption for monitoring chemical warfare agents at ultra-trace levels

| Contributed by Markes International Ltd

Chemical warfare agents (CWAs) and their respective simulants were analysed using Markes’ tube-based systems.

Optimised hydrogen fuel impurity analysis

| Contributed by Markes International Ltd

Identification, measurement and characterisation of volatile organic compounds using by thermal desorption–GC-MS/sulfur chemiluminescence detection

Thermal Desorption Applications Guide: Consumer environmental health

| Contributed by Markes International Ltd

A comprehensive guide to the use of thermal desorption to assess chemical emissions from construction materials and consumer products

Techniques & Tools Gas Chromatography

What is thermal desorption?

| Contributed by Markes International Ltd

A guide to the history, principles and applications of thermal desorption for gas chromatography

Air quality studies: Increasing productivity & data precision

| Contributed by Markes International Ltd

Studies of VOCs take several years to complete. How do analysts ensure the same precision in the data for each sample for the duration of a project?

Measuring PFAS pollution in ambient air

| Contributed by Markes International Ltd

App note showing how TD–GC–MS/MS enables measurement of per- and polyfluoroalkyl substances (PFAS) in air at concentrations as low as 2 pg/m3

Analysis of odours from textiles

| Contributed by Markes International Ltd

Analysis of odours and emissions from automotive textiles and trimmings by thermal desorption with GC×GC–TOF MS

Markes Sorbent sampling tubes for thermal desorption

| Contributed by Markes International Ltd

Markes’ thermal desorption tubes with a variety of sorbent packings for all TD applications deliver optimum results time after time.

UNITY-xr – Single-tube thermal desorption unit with unmatched upgradability

| Contributed by Markes International Ltd

UNITY-xr™ is an industry-leading analytical TD instrument that provides good performance for VOCs and SVOCs collected onto 3½-inch sorbent tubes

PFAS sampling tubes – Markes launches new range of thermal desorption tubes

| Contributed by Markes International Ltd

Thermal desorption sorbent tubes that allow up to 500 L of air to be sampled for the detection and analysis of PFAS compounds

Automated thermal desorption (TD) for GC–MS

| Contributed by Markes International Ltd

TD100-xr is a multi-tube TD for high-throughput automated analysis.

Pocket Diffusive (POD) sampler for passive sampling

| Contributed by Markes International Ltd

A radial diffusive sampler (for analysis by thermal desorption). A large diffusive surface area for adsorption and a short diffusive pathway

HiSorb™ – High-capacity sorptive extraction

| Contributed by Markes International Ltd

A major step forward in sample preparation technology. HiSorb probes sorptively extract VOCs/SVOCs from a range of sample types

Multi-Gas -xr series of thermal desorbers for GC–MS

| Contributed by Markes International Ltd

A powerful leap in analytical technology – and a world’s first for thermal desorption instruments

Industry-standard-size thermal desorption sampling tubes

| Contributed by Markes International Ltd

Markes’ industry-standard-size TD tubes (3½″ × ¼″ o.d.) are available in three materials: stainless steel, inert-coated stainless steel and glass.

Centri® – A breakthrough in sample automation and concentration for GC–MS

| Contributed by Markes International Ltd

Thermal desorption for GC

| Contributed by Markes International Ltd

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