• No cap removal
  
  
• Minimal mechanical movements
  
  
• Low maintenance
  
  

• Intuitive control of all TD conditions and automation sequence parameters and resides on the same PC as the GC control software
  
  
• Unique sequence builder - simplifies sequence construction, assigns specific desorption methods and allows sample tubes to be classified as sample, calibrant or blank
  
  
• Sequence reporter records all events associated with each analysis i.e. date and time of each tube desorption, any deviations such as tube leak failure etc.
  
  
• Optional automatic update of sorbent tube RFID tags
  

Unrestricted upgrade path: Plug-and-play TD 

All series 2 ULTRA configurations may be readily connected and disconnected to any series 1 or 2 UNITY TD platform. 

ULTRA 2 can also be connected to UNITY (2) in parallel with on-line air monitoring/canister automation technology (Series 2 Air Server or CIA 8 accessory).



Series 2 ULTRA options: 

ULTRA - Internal Standard/Dry Purge

An ULTRA 2 autosampler pre-fitted with an Internal Standard/Dry Purge accessory (ISDP) is also available from Markes.

It allows fixed volumes of a gas-phase internal standard to be introduced to the sampling end of each sorbent tube prior to desorption. It can also be used to add standard gas to blank tubes without subsequent desorption. In addition to this, the ISDP allows dry purging of tubes in the sampling direction prior to desorption, to remove excess water prior to analysis.


ULTRA 50:50



ULTRA TD autosamplers (with or without ISDP) may be factory-configured with a 50:50 module to provide single autosampler re-collection of analytes from 50 or 100 tubes. The ULTRA 50:50 option also facilitates automatic dry-purging of sorbent tubes in the sampling direction prior to thermal desorption. 

ULTRA 50:50 can be ordered with integrated electronic mass flow controllers for enhanced split and desorb flow control if required. 







AutoSecure TD system™



A series 2 ULTRA-UNITY system, with or without ISDP, can be further upgraded by the addition of a second ULTRA 2 autosampler to automate the quantitative re-collection of both the split flow during primary (tube) desorption (inlet split) and the split flow during secondary (trap) desorption (outlet split), for all 100 tubes. 










For part numbers and pricing please contact your local Markes distributor.

Relevant technical support publications from Markes International can be automatically downloaded from this web site (registration required). Examples include: 

• Brochure - Series 2 UNITY
  
• Brochure - Series 2 ULTRA and variants
  
• Brochure - Series 2 Air Server
  
• Brochure - Validation of Thermal Desorption featuring SecureTD-Q
  
• TDTS 11 - The good, the bad and the ugly (what to look for in a thermal desorber)
  
• TDTS 12 - About thermal desorption - a basic introduction