Heated Thermal Desorption Sampling Chambers (Catalog C18)

Heated Thermal Desorption Sampling Chambers

C18

Phone: 908-788-5550

www.sisweb.com

Features:

•

NW Type Flange or Conflat Type Flange

•

Max Sample Size:

3" dia. x 1.5" high

•

Other Chamber sizes available on request

•

Maximum Sample Temperature - 750°C

•

Requires 2 Temperature Controllers

•

Requires Separate Flow Controller

•

Accepts any 1/4" diameter desorption tube

•

Maximum purge flow - 1000 ml/min

T

he Heated Thermal Desorption Sampling Chambers are

used to purge volatile and semi volatile organics from

large solid matrix samples

at elevated temperatures and

then trap these analytes on thermal desorption tubes.

The samples

collected are then analyzed using the thermal desorption system in

conjunction with a GC and/or GC/MS. The chamber shown is 4"

diameter x 4" high and can analyze samples up to 3.0" diameter x

1.5" high. These systems are custom made on order and other

chamber sizes can be constructed according to your requirements.

Two models of the 4" Sample Chamber are available - Standard

and High Temperature. The Standard Model is constructed using

an NW type flange with a PTFE encapsulated sealing ring (max

temp 250° C) and a quick disconnect clamp. The High Temperature

Model is constructed using a standard Conflat flange with a copper

sealing ring (maximum temperature 450° C) and the chamber is

clamped using standard 1/4" diameter bolts.

The system shown contains two heaters and J type thermo-

couples. The system requires two temperature controllers (order

separately below). The interior plate heater is used to directly heat

the sample on top of this plate inside the sealed chamber.

This

heater can be heated up to 400° C in the standard model and up to

750°C in the high temperature model. The external heater is used

to heat the sample chamber to prevent the condensation of

volatiles on the surface of its walls. This heater is also used to heat

the chamber to higher temperatures in order to bake it out. The

maximum temperature for heating the walls is dependent on the

material used to seal the two halves of the sample chamber

(Standard Model is 225° C and High Temperature Model is 450° C).

The systems shown contain an adjustable internal purge gas

nozzle that can be positioned or replaced with another style to suit

the users needs. The purge gas can be adjusted from 0 to 1000

ml/min using a separate gas flow controller (not included).

The system is designed to accept any 1/4" diameter thermal

desorption tube including 1/4" glass tubes as well as the SIS ther-

mal desorption tubes. The desorption tube is attached to the top of

the chamber using the 1/4" Swagelok fitting with either PTFE or

Graphitized Vespel seals.

Note: The Sampling Chamber can be Modified for Other Types of

Desorption Tubes.

For sampling of volatile and semivolatile organics from large samples at

elevated temperatures

All Sampling Chambers are custom designed and

manufactured for your application.

For custom designs, call with your

requirements for pricing and availability.

(908) 788-5550

Part No.

Description

SC400 Part #SC400—Click for details
DISCONTINUED
Unit of Measure: EA
Est. Ship Weight=20 lbs

Standard 4" TD Sampling Chamber

SC450 Part #SC450—Click for details
DISCONTINUED
Unit of Measure: EA
Est. Ship Weight=20 lbs

High Temp.. 4" Sampling Chamber

912000 Part #912000—Click for details
Current Price: $920.00
Unit of Measure: EA
Est. Ship Weight=6 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
*

Temperature Controller, Model CT101

* Two temperature controllers required; one for the

plate heater and a second

for the chamber housing.

Desorption Tube Packed

with Adsorbent Resin

1/4"Swagelok Fitting

Chamber Housing

Heating Blanket

with Thermocouple

Electrical Leads

Heater & TC

Electrical Leads

Heater & TC

Purge Gas

Inlet 1/8"

Swagelok

Purge Gas

Inlet Nozzle

Plate Heater & TC

3" dia. Sample Plate

Sealing Bolts

Copper

Gasket

Larger Sizes Available