Markes Launches New ‘xr’ Series of Thermal Desorption Instruments

9 May 2016
Alex Waite
Editorial Assistant

Markes International has announced the launch of a new family of thermal desorption instruments for GC–MS at the analytica 2016 tradeshow in Munich, Germany.

The new products, which form the ‘xr’ series, pre-concentrate organic vapours sampled using sorbent tubes, canisters and on-line air streams, and as well as options for automation, incorporate powerful new advances that extend the capabilities of analytical laboratories analysing volatile and semi-volatile organic compounds (VOCs and SVOCs) in air and materials.

Dr Massimo Santoro, Technical Marketing Director at Markes International, says “A key advantage of the new ‘xr’ series is the extended capability for automated sample splitting and re-collection – a technology pioneered by Markes that allows valuable samples to be re-analysed for method development and compliance with standard methods”.

Other key advances are the ability to quantitatively recover compounds from C2 to C44, a new water-management module for on-line monitoring of humid air streams, and redesigned instrument control software.

Santoro says “The new features of the ‘xr’ series have been developed in response to emerging trends in analytical chemistry, which include the need to analyse more compound types in a single run and the requirement for improved laboratory efficiency. These new products demonstrate that at Markes we’re always listening to our customers and developing innovative ways to help them improve performance and productivity at every point in the process of sampling, thermal desorption analysis and data processing”.

VOC-Mole soil probe

Markes International Ltd

Robust and easy-to-use soil gas sampler. The VOC-Mole is a stainless steel assembly that is inserted into the ground, allowing soil gas to be sampled onto a sorbent tube, for analysis by thermal desorption (TD)–GC–MS.The VOC-Mole is simple to use and easy to transport, and perfect for any analyst wishing to monitor levels of volatile organic compounds in soil.Features: Organic pollutants pass through holes in the hollow tube and are collected on a sorbent tube. Probe can be left in ground for long periods. Compatible with diffusive and pumped sampling. Use of multiple VOC-Moles in a grid arrangement allows the creation of VOC maps. Special cap prevents ingress of water, wildlife and soil debris. Various pack sizes and probe lengths available. Applications: Surveys of industrial, waste and brownfield sites. Screening of organic pollutants over large areas. Pinpointing of leaks from pipelines and industrial facilities.

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