Thermal Desorption

Continuous on-line thermal desorber for environmental monitoring of trace-level organic vapors

TT24-7xr is an advanced, versatile thermal desorption (TD) instrument designed for low-flow monitoring of airborne very volatile and volatile organic compounds (VVOCs and VOCs) with GC-MS.

Optimized for continuous monitoring, TT24-7xr incorporates twin trap technology ensuring complete sample coverage without interruption and enhanced sample throughput. With advanced water management and automated stream selection between sample, standard, and blank, TT24-7xr is the ideal choice for unattended, continuous monitoring of environmental air, material testing chambers, and process gas streams.

Xem thêm: TT24-7xr brochure

Cryogen-free, automated canister and whole-air preconcentration system

UNITY–CIA Advantage-xr™ is an inert, multi-channel system designed for the automated analysis of VOCs in canisters and bags. It features capacity for up to 27 channels, operates completely without cryogen, and is compatible with both on-line and tube-based sampling. It is the ultimate solution for high-throughput laboratories performing canister-based methods such as US EPA TO-15/TO-15A and Chinese EPA HJ 759. It is also ideal for analysts requiring a versatile TD system capable of handling other whole-air samples as well as sorbent tubes.

UNITY–CIA Advantage-xr™ is also available with our award-winning Multi-Gas functionality. The Multi-Gas Enabled version is the only canister and bag thermal desorber independently certified for operation with a choice of three carrier gases: Helium, Nitrogen, and Hydrogen. Hydrogen carrier gas offers fast, cost-effective analysis and protects the laboratory against future Helium shortages.

Read more: UNITY–CIA Advantage-xr brochure

Cryogen-free automated thermal desorption system for unattended on-line air monitoring

UNITY–Air Server-xr™ is an air monitoring system that introduces a controlled flow of sample directly into an integral focusing trap, allowing automated on-line analysis of VVOCs and VOCs in air or gas. It is the ideal solution for 24/7 monitoring of volatiles such as PAMS ozone precursors and odorous species, especially in remote locations where unattended sampling at specific time intervals is necessary.

Xem thêm: UNITY–Air Server-xr brochure

Double sample throughput by simultaneously processing two batches of thermal desorption (TD) tubes

Dual-TD™ is a thermal desorption system designed to maximize sample throughput for dual-channel GC instruments by simultaneously processing two batches of sample tubes.

Featuring two TD100-xr units running in parallel, Dual-TD instantly doubles sample processing productivity. The system also utilizes "overlap mode" to desorb a new pair of samples while the analysis of the previous pair is still underway, completely eliminating GC "idle time." Dual-TD is compatible with any dual-channel GC and is independently certified for operation with Helium, Nitrogen, or Hydrogen carrier gases (Multi-Gas capability).

Dual-TD is the ideal solution for high-throughput laboratories needing to:

- Efficiently carry out large-scale sorbent tube background testing.

- Undertake targeted trace VOCs and SVOCs analysis.

- Measure total VOC analysis at scale.

Read more: Dual-TD product information

DAAMS Instruments

Automated Thermal Desorption System for 4½" Sorbent Tubes

Markes’ new TD100-xr DAAMS and UNITY–ULTRA-xr™ DAAMS are high-throughput, automated thermal desorption systems specifically designed to optimize the analysis of 4½″ Depot Area Air Monitoring Systems (DAAMS) tubes.

These systems are the ideal solution for homeland security laboratories requiring chemical agent analysis using 4½″ tubes. They offer versatile upgrade options, including compatibility with standard 3½″ tubes. The new DAAMS product line is built on Markes’ proven ‘xr’ platform, integrating the latest generation of cryogen-free focusing trap technology.

Read more: DAAMS-xr flyer

UNITY–ULTRA-xr Pro

High-Capacity Multi-Tube Thermal Desorber with Advanced Re-collection

UNITY–ULTRA-xr Pro™ is our flagship automated thermal desorption (TD) system, offering the highest capacity in our range. It enables the unattended processing of up to 199 sorbent tubes in a single sequence.

A hallmark of Markes’ technology is the automated sample re-collection of split flows from both the TD tubes and the focusing trap. This unique feature provides ultimate sample security and peace of mind. It is the ideal solution for high-throughput laboratories looking to maximize productivity and leverage the power of automated sample re-analysis.

UNITY–ULTRA-xr Pro also features Markes’ award-winning Multi-Gas functionality, independently certified for use with three carrier gases: Helium, Nitrogen, and Hydrogen. Utilizing Hydrogen as a carrier gas ensures faster, more cost-effective analyses while future-proofing your lab against Helium shortages.

Read more: UNITY–ULTRA-xr Pro brochure

Multi-tube thermal desorber with advanced upgrade options

UNITY–ULTRA-xr™ is an automated thermal desorption system designed for the rapid and unattended processing of up to 100 sorbent tubes in a single sequence. Additional options include autosamplers for canister, bag, or on-line analysis. The UNITY–ULTRA-xr is the ideal platform for high-throughput laboratories requiring the flexibility to expand their analytical capabilities to extended analyte ranges and varied sample types while maximising sample throughput.

The system also features Markes' award-winning Multi-Gas functionality, which is independently certified for operation with a choice of three carrier gases: helium, nitrogen, and hydrogen. Using hydrogen as a carrier gas enables fast, cost-effective analyses and protects the laboratory against future helium shortages.

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UNITY-xr brochure

ULTRA-xr brochure

TD100-xr™ is an automated thermal desorption system for the rapid and unattended processing of up to 100 sorbent tubes in a single sequence. It is the perfect thermal desorption unit for high-throughput analytical laboratories needing to process large numbers of tube-based samples automatically.

TD100-xr is also available with our award-winning Multi-Gas functionality, independently certified for operation with a choice of three carrier gases: helium, nitrogen, and hydrogen. Hydrogen carrier gas offers fast, cost-effective analyses and protection against future helium shortages.

Read more: TD100-xr brochure

Single-tube thermal desorption with unprecedented upgradeability

The UNITY-xr™ is the industry-leading thermal desorption (TD) instrument for the analysis of VOCs and SVOCs using standard 3 ½ inch (~9 cm) adsorbent sampling tubes. While the UNITY-xr is a standalone single-tube system, its modular design allows for seamless upgrades to meet the evolving requirements of any analytical chemistry laboratory. Key modules include:

 - ULTRA-xr™: A high-throughput autosampler with a capacity of up to 100 TD tubes. It features automated sample re-collection and advanced tube tracking via barcodes or RFID TubeTAGs.

 - Air Server-xr™: A versatile module for online VOC monitoring. It is ideal for the real-time analysis of ozone precursors, terpenes, ultra-volatiles, sulfur compounds, and greenhouse gases. It also enables direct sampling from gas bags or canisters, equipped with an internal pump for low-pressure sampling.

 - CIA Advantage-xr™: A cryogen-free autosampler designed for the analysis of VOCs and SVOCs from canisters and whole-air samples via GC(MS).

Download the product catalog here.