MARKES TD-100 User Manual

TD-100

Automated thermal desorber

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

TD-100™

Simply the best available dedicated system for automated tube desorption

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.

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.

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 preand 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

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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 UNITY™, 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-C40.

Tube desorption and conditioning is possible at temperatures up to 425ºC. 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 -30ºC, 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.

			o-Xylene	(DOP)
1,3,-Butadiene	Benzene	Toluene	Camphene	Di-octyl phthalate

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.

	1	Propylene	32	n-Heptane
	2	Dichlorodifluoromethane	33	Trichloroethylene
	3	1,2-Dichlorotetrafluoroethane	34	1,2-Dichloropropane
	4	Methyl chloride	35	1,4-Dioxane
	5	Chloroethane	36	Bromodichloromethane
	6	1,3-Butadiene	37	Cis-1,3-dichloropropene
	7	Vinyl chloride	38	Methyl isobutyl ketone
	8	Methyl bromide (bromomethane)	39	Toluene
	9	1,2-Dichloroethane	40	Trans-1,3-Dichloropropene
	10	Trichlorotrifluoroethane (Freon® 113)	41	1,1,2-Trichloroethane
	11	Ethanol	42	Tetrachloroethylene
	12	1,1-Dichloroethylene	43	Methyl n-butyl ketone
	13	1,1,2-Trichlorotrifluoroethane	44	Dibromochloromethane
	14	Acetone	45	1,2-Dibromoethane
	15	Carbon disulfide	46	Chlorobenzene
	16	Isopropyl alcohol	47)	o-, m-, p-Xylene +
	17	Methylene chloride	48)
				ethylbenzene
	18	Tert-butyl methyl ether	49)
	19	Cis-1,2-dichloroethylene	50)
	20	n-Hexane	51	Styrene
	21	1,1-Dichloroethane	52	Tribromomethane
	22	Vinyl acetate	53	1,1,2,2-Tetrachloroethane
	23	Trans-1,2-dichloroethylene	54	Trimethylbenzene
	24	Methyl ethyl ketone	55	Trimethylbenzene
	25	Ethyl acetate	56	1-Ethyl-4-methyl benzene
	26	Tetrahydrofuran	57	Dichlorobenzene
	27	Chloroform	58	Dichlorobenzene
	28	1,1,1-Trichloroethane	59	Chloromethylbenzene (alpha)
	29	Cyclohexane	60	Dichlorobenzene
	30	Carbon tetrachloride	61	1,2,4-Trichlorobenzene
	31	Benzene	62	Hexachloro-1,3-butadiene

Simultaneous analysis of VOC & SVOC optimises productivity	Splitless analysis of complex “air toxics” standard (1 L, 2 ppb
	concentration) optimises sensitivity