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This new handy wall chart can help guide you through the determination
of the adsorption and desorption properties of Tenax® TA for use
with your thermal desorption applications. This chart is the result
of more than 6 months of work in which more than 200 organic compounds
were analyzed at 20 degree temperature intervals from 0 °C
to 300 °C. The breakthrough volume for each organic was
analyzed in triplicate for breakthrough volumes from 0.001 liter
(1.0 mL) through 1.0 liter at the various temperatures. Breakthrough
Volumes greater than 1.0 liter per gram were determined through
linear regression analysis of the breakthrough volume data from
at least 7 different temperatures. The complete description of
the method utilized to determine the breakthrough volumes is described
in The Mass Spec Source, Vol. XVIII, No. 4, July 1994. The breakthrough
volumes for 198 organic compounds are listed on the chart at temperatures
from 0 degrees C to 300 °C at 20 degree intervals. The
Breakthrough Volumes are listed in Liters of air per gram of Tenax
TA resin. The chart is color coded with Breakthrough Volumes less
than 0.010 Liters (10 milliliters) indicated in red and Breakthrough
Volumes greater than 10 liters indicated in blue. This makes it
easy to determine the gas volatiles which can be purged through
the Tenax TA resin at a particular temperature as well as the
temperature required to elute or desorb a particular range of
organics off the Tenax TA resin. the charts are printed on 24"
x 36" heavy paper stock and are also available laminated
in plastic for extra durability and long life. The following classes
of organic compounds were analyzed:
|Hydrocarbons: || 30 compounds|
|Alkenes: || 22 compounds|
|Alcohols & Glycols: || 36 compounds|
|Acetates & Acids: || 11 compounds|
|Aldehydes & Ketones: || 27 compounds|
|Halogens: || 24 compounds|
|Aromatics & Terpenes: || 32 compounds|
|Amines: || 16 compounds
Adsorbent Resins Guide
Tenax TA Breakthrough Volume Chart|
||24 inches x 36 inches
||24 x 36 inches Laminated
with the purchase of a 10.0 gram or 25.0 gram bottle of Tenax
Tenax® is a registered trademark of Buchem BV.
Tenax® TA Adsorbent Resin Wheaton Purge and Trap System
Tenax® TA is a porous polymer resin based on 2.6-diphenylene oxide.
Graphitized Vespel® Injection Port Liner and Seals
The Wheaton Purge and Trap Apparatus is widely used for the isolation of pollutants in soil, sediment, waste water, and other solid and liquid samples by purging a clean gas over and thru the sample contained therein and trapping the purged volatiles on adsorbent traps.
The new Graphitized Vespel® Injection Port Liner Seals are designed to replace the Viton® 'O' Ring Seals.
Purge and Trap Sparging Needles
For cleaning inside Silco Coated desorption tubes
GC Low Dead Volume Injection Port Liners
A variety of lengths of the stainless steel sparging needles are
available for the S.I.S. Purge & Trap system.
Tap & Die
These new Low Dead Volume Injection Port Liners have been specifically designed for use with the Scientific Instrument Services Short Path Thermal Desorption System but could also be utilized with other injection systems and techniques.