SIS TD-4 SHORT PATH THERMAL DESORPTION SYSTEM with CONTROLLER & MANUAL FREE SHIP

This listing is for a TESTED and in PERFECT OPERATIONAL Condition SIS TD-4 SHORT PATH THERMAL DESORPTION SYSTEM with CONTROLLER as can be seen in the pictures.

MANUAL IS ALSO INCLUDED WITH THIS SYSTEM AS CAN BE SEEN IN THE PICTURES!

This system came from a Federal University and has been fully tested, works perfectly and that's why we can offer a 90-DAY-WARRANTY on this unit!

COSMETICALLY LOOKS GREAT AS WELL!!! Please check the many pictures available here.

As with all our items everything you see in the pictures is included, anything you see IS included, anything you don't see IS NOT included. 

If you have any questions, please feel free to inquire BEFORE BUYING, we will respond immediately.

Model TD-4 - Short Path Thermal Desorption

Product Overview

The SIS TD-4 is a 'short path' thermal desorption system. It provides unattended thermal extraction (thermal desorption) and injection of volatile and semi-volatile organics from solid, liquid and gas samples into a gas chromatograph (GC). The system delivers samples into the GC along an optimal “short path,” thereby eliminating transfer lines and cross-sample contamination issues found in previous systems.

A sample for analysis is introduced into a desorption tube, which is then fitted with a needle and attached to the TD-5 Desorption Unit. The Desorption Unit sits over the GC injection port, where, upon signal from the PC software, it automatically injects and desorbs the sample into the GC injection port and column using the temperatures and times prescribed in the desorption method.

The TD-4 System consists of the Desorption Unit (which contains the sample analysis hardware), an Electronics Console (which contains a microprocessor and power supply), and a Windows- based Thermal Desorption software (which provides control and monitoring of the system). This software can be fully integrated with selected GC data systems (e.g. Agilent ChemStation), or it can operate fully independently from the GC data system. Various accessories are available such as the Cryo-Trap, which cryogenically cools and rapidly heats the GC column head for improved chromatographic resolution.

The Short Path Thermal Desorption System provides several unique advantages over other desorption systems:

It enables the sample, which is trapped on an adsorbent media contained in a Silco Coated SS (desorption tube), to be subjected to rapid heating.

The desorbed component can be easily and efficiently transferred into the injection port of the gas chromatograph from a glass lined stainless steel sample tube and its associated injection needle. This provides for a short transfer path for the sample in an inert environment to minimize the degradation of labile sample components which often decompose upon contact with the hot catalytic metal wall surfaces of the transfer path of other systems.

Third, each sample has its own individual adsorbent trap tube and needle to eliminate the possibility of cross-contamination from sample to sample, thus preventing any 'memory effect' due to overloading of the sample in the Silco Coated desorption tube or due to residues from previous samples.

 Features

High sensitivity Thermal Desorption and Direct Thermal Extraction of solid, liquid, and gas samples

No memory effects – each sample has its own independent and “short” flow path from sample to GC, eliminating transfer lines as a source of contamination

Stainless steel sample tubes (or silco treated) are inert to samples and strong for sample handling and transporting.

Rapid cryogenic (CO2 or LN2) cooling and heating of the GC column head for improved chromatographic resolution (optional Cryo-Trap™ accessory).

Mounts overtop most GC injection ports—easily removable and transferable.

Automatic injection and desorption of sample into GC (pneumatic driven injector).

Windows-based software for control and monitoring of the system.

Seamless integration into Agilent ChemStation™ and Thermo Fisher Scientific Xcalibur™

Optional - stand alone operation with other top injecting GC’s

Desorption: temp range: 20 ° to 400 °C, either isothermal or temperature programmed. Max heat rate: 100 °C/min.

Cryo-trap: min temp: -70 °C (CO2) or -180 °C (LN2). Max temp: 400 °C. Max heat rate: 10 °C/sec.

 Technical Specification

Desorption Unit Weights and Dimensions

Weight: 17 lbs

Size: 5.5' wide x 6.5' deep x 22' high

Carrier Gas (Helium or Nitrogen): 40-60 psi, 100 cc/min max (0.04 cfm)

Compressed Air: for gas valve operation, Laboratory Supply or Cylinder, 60 psi, 100 cc/min max (0.04 cfm)

Electronics Console Weights and Dimensions

Volts AC: 115 +/- 10%, 10 amp max.

Temperature Controller

Heater Output: 115 Volt, 600 Watt

Input: Platinum Resistance Thermometer (PRT)

Heater Cartridges: 115 Volt, 300 Watt ea., x2

Temperature Range: 20 degrees to 350 degrees C

Temp. ramp: 0 to 100 degrees C/min

Cryo-Trap Heater

Heater Output: 18VAC

Inpu: TC

Range: 0 to 400 degrees C

Cryo-Trap Cool Valve

Output: 110V

Temperature Range: CO2 (0 to -70 degrees C); LN2 (0 to -180 degrees C)

 Theory of Operation

The Thermal Desorption Unit sits directly on top of the injection port of most GC's, where it provides direct desorption of both volatile and semi-volatile samples into the GC injection port and column. The system delivers samples into the GC along an optimal “short path,” thereby eliminating transfer lines and cross-sample contamination issues found in previous systems.Samples to be analyzed are collected into stainless steel desorption tubes (or silco-treated)(Fig.1A). A solid sample of inter-est may be packed directly into the tube and subjected to direct thermal desorption. Alternately, the tube may be packed with adsorbent resin such as Tenax™ TA or activated carbon for indirectly trapping analytes from liquid or air samples.

Desorption Tubes can be packed with an adsorbent resin or with solid matrix samples.Also included with this set are the items shown in the pictures.

Stock # 221712