How to replace the focusing trap on the TD100-xr. For more information visit https://www.markes.com/ TD100-xr™ is a high-throughput, automated thermal desorption system for the rapid and unattended processing of up to 100 sample sorbent tubes in a single sequence. In contrast to other thermal desorption units, TD100-xr quantitatively re-collects samples for re-analysis or storage, enhancing sample security. TD100-xr also features an electrically cooled cold trap, dispensing with the expense and inconvenience of liquid cryogen. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

For more information visit https://www.markes.com/ The BioVOC-2 breath sampler is a simple-to-use device designed for non-invasive biological exposure monitoring of volatile organic compounds (VOCs). Constructed of safe, non-emitting plastic, the BioVOC-2 can be operated with minimal training and without medically qualified staff in attendance. Each BioVOC-2 is supplied with a disposable cardboard mouthpiece (additional packs of mouthpieces are available). The sampler collects a representative sample of end-tidal air, without contamination or dilution with breath from the bronchial tubes or mouth. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

How to introduce standards to sorbent tubes using the CSLR. For more information visit https://www.markes.com/ The Calibration Solution Loading Rig (CSLR) has been specifically designed for loading sorbent tubes with gas- or liquid-phase standards. It has a flow-path constructed of stainless steel and consists of an unheated injector port with a controlled carrier gas supply. The sampling end of a packed sorbent tube is connected to the CSLR by a ¼-inch brass nut and PTFE ferrule. The carrier gas flow is adjusted using a needle valve, and is normally set between 50 and 100 mL/min. The calibration standard (gas or liquid phase) is introduced through the injector septum using a precision syringe, and onto the sampling end of the attached tube. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

How to introduce gas standards to complement liquid standards using the Calibration Solution Loading Rig (CSLR). For more information visit https://www.markes.com/ The Calibration Solution Loading Rig (CSLR) has been specifically designed for loading sorbent tubes with gas- or liquid-phase standards. It has a flow-path constructed of stainless steel and consists of an unheated injector port with a controlled carrier gas supply. The sampling end of a packed sorbent tube is connected to the CSLR by a ¼-inch brass nut and PTFE ferrule. The carrier gas flow is adjusted using a needle valve, and is normally set between 50 and 100 mL/min. The calibration standard (gas or liquid phase) is introduced through the injector septum using a precision syringe, and onto the sampling end of the attached tube. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

For more information visit https://www.markes.com/ Markes 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 instruments, sampling equipment and consumables that enhance the analytical capability of GC–MS.

For more information visit https://www.markes.com/ Tubes on all Markes’ TD autosamplers are sealed with unique DiffLok™ caps, which simply push onto both ends of every tube. DiffLok caps use Markes’ patented diffusion-locking technology to preserve sample integrity by preventing both analyte loss and artefact ingress. DiffLok caps ensure that even volatile analytes are successfully retained, guaranteeing reproducible results for standards at the beginning and end of multi-tube sequences. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

How to replace the focusing trap on the UNITY-xr. For more information visit https://www.markes.com/ UNITY-xr™ is an industry-leading analytical​ TD instrument for the simultaneous analysis of VOCs, SVOCs and thermally labile compounds collected onto sorbent tubes. In contrast to other thermal desorption units, UNITY-xr quantitatively re-collects samples for re-analysis or storage, enhancing sample security. UNITY-xr also features an electrically cooled cold trap, dispensing with the expense and inconvenience of liquid cryogen. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

For more information visit https://www.markes.com/ The Micro-Chamber/Thermal Extractor™ (µ-CTE™) is a versatile and compact unit with up to six small cylindrical chambers that enables the sampling of chemicals released from products or materials. Released volatile and semi-volatile organic compounds (VOCs and SVOCs) are collected onto sorbent tubes for analysis by TD–GC–MS. The Micro-Chamber/Thermal Extractor is perfect for anyone needing to sample VOCs or SVOCs emitted from products and materials. Applications range widely, from emissions screening of construction materials, consumer products and car trim to profiling the aroma or fragrance or foods and consumer products. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).

How to take a personal monitoring diffusive sample. For more information visit https://www.markes.com/ Penclips attach to the groove on 3½-inch metal sorbent tubes so that they can be easily fastened to a lapel or pocket for personal monitoring. Markes is a specialist manufacturer of instrumentation for detection of trace-level volatile and semi-volatile organic compounds (VOCs and SVOCs).