Markes International is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs). Markes has a well-deserved reputation for its application expertise in the field of thermal desorption, supplying a comprehensive range of instrumentation, sampling equipment and consumables that enhance the analytical capability of GC–MS. In addition, Markes has gained recognition for its innovative, high-performance BenchTOF range of time-of-flight mass spectrometers for GC, and associated compound-identification software. Markes’ technological innovation in mass spectrometry also includes Select-eV, ground-breaking ion-source technology, which allows the production of reference-quality 70 eV EI mass spectra with conventional full-fragmentation patterns, and repeatable ‘soft-ionisation’ spectra with reduced fragmentation and an enhanced molecular ion.
Generating useful information from rapid measurement systems, such as time-of-flight mass spectrometers or VOC sensors, requires sophisticated data analysis algorithms
For example, those relating to deconvolution, noise reduction and principle components analysis (PCA).
ALMSCO has developed capabilities for analysis of trends in data by PCA, as well as target compound analysis and chromatography deconvolution.
Since 1997, Markes International has been at the forefront of innovation for enhancing the measurement of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs) by gas chromatography (GC). Our range of thermal desorption products, led by our flagship UNITY™ and TD-100™ thermal desorbers, have for well over a decade set the benchmark in the field for quality and reliability. By lowering detection limits, and increasing the options open to the analyst, our thermal desorbers facilitate automation, and greatly extend the application range of GC. Our comprehensive portfolio of thermal desorption products also includes numerous sampling accessories, and the widest range of consumables on the market. n addition to our long-established reputation for thermal desorption, we also manufacture the BenchTOF™ range of time-of-flight mass spectrometers for GC, as well as associated software. Now with the unique capability to adjust the ionisation energy without the hassle of other soft ionisation techniques, our BenchTOF range exemplifies our approach to our entire business – developing solutions from the ground up that directly meet the challenges faced every day by analysts. Our instruments are used in a range of VOC and SVOC monitoring scenarios, pre-eminent amongst these being environmental monitoring – the detection of hazardous chemicals in air, water and soil. Our systems have also long been used to detect chemical warfare agents (homeland security), and are finding increasingly important applications in the field of material emissions and metabolomics. Our products are also widely used in advanced research, such as petrochemical fingerprinting, breath sampling for disease diagnosis, and investigations into the role of volatiles in plant–herbivore interactions