MARKES TD-100 User Manual

TD-100

Automated thermal
desorber

Universal TD system for up to 100 RFID-tagged
or untagged tubes

Thermal desorption (TD) is a highly versatile,
sensitive and labour-saving sample introduction
technique for GC and GC/MS. It combines selective
concentration enhancement with direct extraction
into the carrier gas. Extracted analytes are efficiently
transferred/injected into the GC(MS) or alternative
vapour analyser all in one fully automated operation.

Key applications include measurement of volatile
and semi-volatile organic chemicals (VOC and SVOC)
in air and materials.

Simply the best available dedicated system for

automated tube desorption

TD-100™

Versatility • Single system for all tube-based TD applications

• Trace levels (ppt) & high concentration samples (ppm/%) in a single sequence

• Simultaneous analysis of VOC & SVOC

• Platform neutral: Adds to all major makes of GC & GC/MS

Confidence • Quantitative sample re-collection (SecureTD-Q™) for repeat analysis - overcomes the one-shot limitation

of other analytical thermal desorption systems and simplifies method/data validation

• TubeTAG™: Every TD-100 is compatible with RFID tagged or untagged tubes and includes tag read/write

as standard for enhanced sample/tube traceability

• Fully method compliant including stringent leak testing of every sample

• Options for internal standard addition and tube dry purging functionality (ISDP)

• Patented DiffLok™ caps provide a uniquely effective tube seal pre- and post-desorption – preserving the

integrity of sampled and blank tubes

• Automatic pressure ratio testing monitors the integrity of sorbent tubes

High throughput • 100 tubes for unattended operation over extended periods

• Time saving overlap mode allows desorption of a subsequent sample to begin while GC analysis of a

previous sample continues

• Intuitive control software offers simple sequence construction and rigorous system/sample logging

Economical • Easy to maintain modular design

• Much lower purge gas consumption than other TD brands

• Cryogen-free operation reduces running costs

Robust • DiffLok caps facilitate mechanically simple automation (no capping/uncapping required)

• Electrically-cooled focusing trap eliminates ice plug formation and minimises downtime

Upgradability The TD-100 is available with the following options:

• Electronic control of split and desorption flows

• Automated re-collection for repeat analysis (also includes dry purge functionality)

• Internal standard/dry purge (ISDP) functionality

For your convenience TD-100 is also available pre-configured with automated sample re-collection

and electronic mass flow control (MFC) of all split and desorption flows

For over a decade Markes International has led the way in

analytical thermal desorption. TD-100 builds on this pedigree,

combining every technological innovation of the last 10 years

with field-proven reliability to provide a robust yet high

performance solution for any high throughput laboratory.

Universal TD system for all applications

The TD-100 is dedicated and optimised for automated tube

desorption. It complements Markes’ state-of-the-art modular TD

units (series 2 UNIT Y™, ULTRA™, Air Server™) and incorporates

many of the same innovative features.

The patented heated valve built into TD-100 is specifically

designed for analytical thermal desorption. It can be operated at

the low temperatures required for enhanced recovery of labile

components and also at the high temperatures required for the

quantitative recovery of semi-volatiles such as n-C

40

.

Tube desorption and conditioning is possible at temperatures up

to 425

ºC. Critical sections of the internal flow path have also been

optimised, both for enhanced recovery of higher boiling “sticky”

compounds and quantitative analysis of reactive components.

Example analytes include: 5/6-ring PAHs, phthalates, PCBs,

hydrocarbons to n-C40, mercaptans, explosives and chemical

warfare agents.

With extended electrical cooling of the entire 60 mm sorbent bed

down to -30

ºC, the TD-100 focusing trap offers quantitative,

cryogen-free retention of ultra-volatiles without risk of ice plug

formation. Quantitative retention of volatiles can also be combined

with efficient release of high boiling components for simultaneous

analysis of VOC and SVOC.

Peerless analytical performance

Unsurpassed trap heating rates (100ºC/sec) and unique trap

heater design offer optimum desorption efficiency even under low

flow (<2 mL/min) splitless conditions. This ensures best possible

detection limits for trace level compounds. Fast trap cooling rates

minimise cycle times and optimise productivity.

One automated system ...

Easy-change focusing trap with collar

Simultaneous analysis of VOC & SVOC optimises productivity

Splitless analysis of complex “air toxics” standard (1 L, 2 ppb

concentration) optimises sensitivity

Di-octyl phthalate (DOP)

Camphene

o-Xylene

Toluene

Benzene

1,3,-Butadiene

1 Propylene
2 Dichlorodifluoromethane
3 1,2-Dichlorotetrafluoroethane
4 Methyl chloride
5 Chloroethane
6 1,3-Butadiene
7 Vinyl chloride
8 Methyl bromide (bromomethane)
9 1,2-Dichloroethane
10 Trichlorotrifluoroethane (Freon® 113)
11 Ethanol
12 1,1-Dichloroethylene
13 1,1,2-Trichlorotrifluoroethane
14 Acetone
15 Carbon disulfide
16 Isopropyl alcohol
17 Methylene chloride
18 Tert-butyl methyl ether
19 Cis-1,2-dichloroethylene
20 n-Hexane
21 1,1-Dichloroethane
22 Vinyl acetate
23 Trans-1,2-dichloroethylene
24 Methyl ethyl ketone
25 Ethyl acetate
26 Tetrahydrofuran
27 Chloroform
28 1,1,1-Trichloroethane
29 Cyclohexane
30 Carbon tetrachloride
31 Benzene

32 n-Heptane
33 Trichloroethylene
34 1,2-Dichloropropane
35 1,4-Dioxane
36 Bromodichloromethane
37 Cis-1,3-dichloropropene
38 Methyl isobutyl ketone
39 Toluene
40 Trans-1,3-Dichloropropene
41 1,1,2-Trichloroethane
42 Tetrachloroethylene
43 Methyl n-butyl ketone
44 Dibromochloromethane
45 1,2-Dibromoethane
46 Chlorobenzene

47)

48)

49)

50)
51 Styrene
52 Tribromomethane
53 1,1,2,2-Tetrachloroethane
54 Trimethylbenzene
55 Trimethylbenzene
56 1-Ethyl-4-methyl benzene
57 Dichlorobenzene
58 Dichlorobenzene
59 Chloromethylbenzene (alpha)
60 Dichlorobenzene
61 1,2,4-Trichlorobenzene
62 Hexachloro-1,3-butadiene

o-, m-, p-Xylene +
ethylbenzene