Thermal Desorption

CDS 9305

Product Features
Versatile Configurations to Mainstream TD Tubes

The CDS 9300 families could be configured to adopt 6mm x 4.5" CDS TD tube, 10mm x 4.5" CDS TD tube, 1/4" x 3.5" PE and Markes TD tube and VOST 16mm x 5" TD tube

Cryogen Free with Pre-Desorb and Pre-Heat

To improve the resolution of early eluting molecules, CDS uses pre-desorb and pre-heat technique to mechanically confine analytes in the focus tube until the desorption temperature is reached.  

Hand-Held Plug-in Control Interface

This hand-held interface gives you easy access to the Thermal Desorption system without using a PC. This is an essential feature for mobile labs in field sampling and analysis.

High Temperature Valve Oven at max 350°C

The high temperature oven (350°C)  significantly extends the analyte range from VOCs to sVOCs.  

Built Tough with Easy Maintenance

The CDS 9300 is built tough on military standard. Routine maintenance only requires basic tools in accessing the components. 

Powerful Windows Based Software

The software is Windows 10 compatible to give user full access to method editor and sequence table.

Built-in MFC

With the built-in Mass Flow Controller, you could accurately control the sampling volume through the method editor

Quick Connect to Vacuum

The 9305 has quick connect lock to vacuum line. The on and off the pump could be controlled through the 9305 power panel. 

Compatible to Summa Canister

Besides the thermal desorption tube, the CDS 9305 supports various air sample container, including Tedlar bags and Summa Canister

Product Introduction

Programmable Time's:

Focus Trap:


Dynamic Range:


Temperature Accuracy:

Tube Heating Rate:

Trap Heating Rate:

Valve Oven:

Transfer Line:

Sample Desorb:

Focus Desorb:

On-Line Sampling:

GC Connection:


Dimension (W x H x D):

0 - 999.9 minutes

Yes, Standard 1/8" Vocarb

Optional 6 mm Tenax-TA 


Not Required. Standard Pre-Desorb




Up to 350°C

Up to 350°C 

Up to 400°C

Up to 400°C

Near-real Time, Single Tube

Heated Transfer Line

19 kg

13" X 11" X 18"


The CDS 9305 Thermal Desorption system adds a Mass Flow Controller (MFC) for near-real time sampling. It features a hand-held controller for system maintenance and direct communication. With the highest programmable valve temperature on the market (350°C), the 9305 can venture into applications where other systems can not perform, including VOCs, sVOCs, polar and nonpolar compounds. The two stage trapping and desorption process with Pre-desorb and Pre-heat feature eliminate the need of any Peltier cooling or liquid cryogen to improve the resolution for early eluting molecules. An optional heated sampling line is available to collect air samples. 

Part Number
ACEM Thermal Desorption System, Model 9305 NRT with 6mm Trap
1/4" OD X 3.5" L Thermal Desorption Tube Heater Chamber for 9300
VOST (16 mm X 4.5") Heater Chamber Module for 9300
Vacuum Pump, low noise and vibration, max. vacuum - 27" high
5 feet Heated Sampling Line for 9305/9350
6 mm O.D. x 4 1/2" TD tube, 20:35 mesh Tenax-TA/Carboxen 1000/Carbosieve SIII