User`s guide

Introduction
15
See the following table for model descriptions.
Available Optional Accessories
Internal Standard: Used to introduce a known quantity of a
gaseous standard into the sample tube for internal-standard addition
calibration and quality assurance. Internal standard is added to
sample tube immediately before desorption and analysis in sampling
direction to maintain sample integrity and allows standards with
several compounds to be used on tubes with multiple adsorbents.
Also enables dry purging of sample tubes for removal of water prior
to desorption.
On-Line Sampling: System for on-line sampling of ambient air, gas
streams or canisters. Includes mass flow controller for sample
control, Nafion drier and dry air purge control. Stream selector to
switch automatically between sample and calibrant. Thermal
desorber can still be used for tube desorption.
Liquid Nitrogen: For operation of the cold trap to -100 °C. Requires
pressurized liquid nitrogen dewar with pressure cooling release
valve set to 25 psi (180 kPa).
Model Features
TurboMatrix 100 TD Single Tube Thermal Desorber
with manual pneumatics
TurboMatrix 150 ATD Automated Thermal Desorber
(50 tubes with manual
pneumatics)
TurboMatrix 300 TD Single Tube Thermal Desorber
with PPC
TurboMatrix 350 ATD Automated Thermal Desorber
(50 tubes with PPC)
TurboMatrix 650 ATD Automated Thermal Desorber
(50 tubes with PPC, sample
recollection, tube and trap)