Markes International

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.

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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