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Product Introduction
Product Features
72 Position Autosampler

CDS adopts a novel way to protect the TD tube by sealing in a reusable gas tight metal chamber, while waiting for the autosampler to pick up. 

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Dual Mode Focusing Trap

To improve the resolution of early eluting molecules, CDS adopts pre-desorb and pre-heat technique along with Peltier cooling to mechanically and chemically confine analytes on the analytical trap to improve focusing

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Stand-Alone Autosampler

The 7550S Thermal Desorption Autosampler has a built in focus trap and does not require a separate sample concentrator. 

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High Temperature Valve Oven Programmable to 300°C

The high temperature oven (300°C)  significantly extends the analyte range from VOCs to sVOCs.  

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Excellent TD Tube Compatibility

The autosampler can be configured to accommodate standard  1/4" x 3.5" TD tube from various manufacturers from its custom calibration interface

Powerful Windows Based Software

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

Built-in Leak Check

The automated leak check assures the system is air-tight before proceeding with the desorption of your sample. 

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Thermal Slicing/Tube Conditioning

7550S has capability to perform programable vent based on desorption temperature. This feature could be used as tube conditioning after desorbing the target VOCs of interest. 

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10,000:1 Sample Split

This optional sample split feature allows the 7550S to quantitatively transfer 1% of sample to GC. Combining with the GC sample split, this feature could offer up to 10,000:1 total split. 

Product Features
Product Introduction
Specifications:

TD Tube Positions:

Tube Supported:

Concentrator:

Focus Trap:

Pre-Desorb Pre-Heat:

Peltier:

Tube Heating Rate:

Trap Heating Rate:

Valve Oven:

Transfer Line:

Sample Desorb:

Focus Desorb:

GC Connection:

Internal Standard:

Sample Saver:

Weight:

Dimension (W x H x D):

72

1/4" X 3.5" Or 6 mm X 4.5"

Built-in

Low Thermal Mass Vocarb

Yes, Standard

Yes, Optional from -20°C

1000°C/min

900°C/min

Up to 300°C

Up to 350°C 

Up to 400°C

Up to 400°C

Heated Transfer Line

Yes, optional

No

23 kg

56.9cm X 48.2cm X 62.2cm

Summary

The CDS 7550S is a stand-alone 72 position Thermal Desorption Autosampler for Thermal Desorption - Gas Chromatography - Mass Spectrometry (TD-GC-MS) in the analytical lab. Built on the 2nd generation autosampler platform, the CDS 7550S is capable of 3D positioning within 1 mm, and thanks to its unique custom calibration, it could handle 3.5" standard Thermal Desorption tube from any manufacturer. These features make CDS 7550 the most reliable Thermal Desorption autosampler available to the market. The 7550S adopts two focus modes as Pre-desorb\Pre-heat function for high humidity sample, and optional Peltier module for lighter compounds, to improve the resolution of early eluting peaks.

Applications
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2
Applications
Category
Description
Part Number
Instrument
7550S Thermal Desorption Autosampler with Concentrator 3.5" Tube
7554-5015(115V)/7554-5016(220V)
Option
Single Channel Air Sampler
1010-0573
Option
Peltier Cooled Focusing Trap Module for 7550S
7554-5022(115V)/7554-5023(220V)
Option
7550S Sample Split Option
7553-5036
Option
Gas Internal Standard Addition Option for 7550/7550S
7503-5010
Parts
1/4"x3.5" Thermal Desorption Tube, Unconditioned, and Tenax TA 60:80
SU60520-60
Parts
7550/7550S Left Gripper
7502-5041
Parts
1/8" SS Trap, packed with Tenax - TA 60:80 mesh - 4 1/2" Long
9301-5056
Parts
Kalrez o-ring, bottom tube heater seal
1620-0493
Parts
Valve Rotor for Stright 8 Port Valve
2460-0247
Parts
1/4" x 3.5" Thermal Desorption Tube for EPA Method 325
C-SIC60524-B
Parts
7550/7550S Right Gripper
7502-5042
Parts
7550/7550S Top Tube Seal Septum with Hole
7503-1001
Parts
1/8" SS Trap, Vocarb - 4 1/2" Long
9301-5055
Parts
1/4" x 3.5" Thermal Desorption Tube, Tenax TA 60/80
C-SIC60520-60-B
Parts
1/8" SS Trap, packed with Glass Beads 60:80 mesh - 4 1/2" Long
9301-5076
Parts
1/4" x 3.5" Thermal Desorption Tube for Emissions
C-SIC60567-B
Parts
1/4" x 3.5" Thermal Desorption Tube for PAH
C-SIC60564-B
Parts
1/4" x 3.5" Thermal Desorption Tube, Carbograph2 / Carbograph1 / Carboxen 1000
SU644-4
Parts & Options
Downloads
Downloads

Request form for manuals and software

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Thermal Desorption Series

CDS 9300
CDS 9300

CDS's base model instrument for single tube desorption.

CDS 9350

CDS 9350 supports continuous real time air monitoring through a dual tube setup.

CDS 7550S

Stand-alone 72 position Thermal Desorption system

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Sampling Devices

Portable single channel air sampler

CDS 9305

Near-real time sampling Thermal Desorption system.

CDS 7550

72 position autosampler for 9300 family improve productivity and efficiency. 

Tube Conditioner

CDS's single and six tube conditioners are essential accessories for your analysis. 

Leaders in GC Sample Introduction Technology

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