Minimize Adsorption of
Active Analytes...
Continued from page 12
• 13 •
2003
Volume 2
800-356-1688
Holemakes direct injection
possiblewith EPC-equipped
Agilent 6890 GCs!
deactivated
all liners are
DrilledUniliner
®
Use aDrilledUniliner
®
inlet linerwith
the hole near the bottom if com-
pounds of interest will be affected by
a tailing solvent peak. Use aDrilled
Uniliner
®
inlet linerwith the hole near
the topwhen compounds of interest
elute away from the solvent peak,
when sensitivity is critical, orwhen
the sample solvent iswater.
Siltek
™
Deactivation—TheNext Generation of SurfacePassivation
• Maximizes the inertness of the sample pathway.
• Minimizes breakdown.
• Low bleed.
• Thermally stable.
• “Clean and green”—manufacturedwithout the use of harmful organic solvents.
Restek offers the next generation of deactivation. The Siltek
™
deactivation process (patent pending) produces a
highly inert glass surface, which features high temperature stability, extreme durability, and low bleed. Try
Siltek
™
liners, guard columns, wool, and connectors for better recovery of sample analytes.
For Siltek
™
inlet liners, add the corresponding suffix number to the liner catalog number.
Siltek
™
with
Siltek
™
with
qty.
Siltek
™
Siltek
™
wool
CarboFrit
™
each
-214.1
addl. cost
-213.1
addl. cost
-216.1
addl. cost
5-pk.
-214.5
addl. cost
-213.5
addl. cost
-216.5
addl. cost
25-pk.
-214.25
addl. cost
-213.25
addl. cost
-216.25
addl. cost
Under the same conditions, aDrilledUniliner
®
with the hole near the top produces a solvent
peakwith a small tail (Figure 3c). This is
because solvent remainingwithin the liner,
between the hole and the column entrance, is
not swept out of the injection port when the
injector goes into the split mode. Consequently,
we recommend this liner for analyses inwhich
the analytes would not be affected by a solvent
tail, such as chlorinated pesticide analysis. A
DrilledUniliner
®
with the hole near the top
will provide the best sensitivity, and is recom-
mendedwhen sensitivity is paramount. A
DrilledUniliner
®
with the hole near the top
also has exhibited excellent reproducibility for
analysis of glycols inwater.
For accurate, reproducible, problem-free
split/splitless injections, we recommend youuse
aDrilledUniliner
®
inlet liner—and connect it
to aRestek capillary GC column.
References
1.
Operating Hints for Using Split/Splitless Injectors
Restek Corporation, Bellefonte, PA, 36pp, 2002.
(Reference free on request: cat.# 59880A)
2.
Higher Responses for Chlorinated Pesticides, Using a
DrilledUniliner
®
GC Inlet Liner andRtx
®
-
CLPesticides Columns
Restek Corporation, Bellefonte,
PA, 4pp, 2003.
(Reference free on request: cat.# 59487.)
New / Recent Literature
✔
Analysis of VolatileOrganics - technical guide (lit. cat.# 59887A)
✔
Brominated FlameRetardants - applications note (lit. cat.# 59389B)
✔
Environmental Gas Standards - Fast Facts (lit. cat.# 59276A)
✔
EZNo-Vent
™
GC/MSConnector - new product flyer (lit. cat.# 59498)
✔
Foods Flavors& Fragrances In-Review - abstracts of Restek publications (lit. cat.# 59489)
✔
High-ResolutionAnalyses of FAMEs - applications note (lit. cat.# 59584A)
✔
HPLCminicatalog (lit. cat.# 59241A)
✔
Inlet Supplies - a handy guide to septa, liners, etc. (lit. cat.# 59893B)
✔
Pesticides (PCBs) / GCRacer - applications note (lit. cat.# 59457)
✔
Pinnacle
™
DBHPLCColumns - new product flyer (lit. cat.# 59499)
✔
Sample Cylinder Technology - product flyer (lit. cat.# 59618A)
✔
STARServiceRewards - new program: earn credit toward instrument service
(lit. cat.# 59522)
✔
Vu2Union
™
ColumnConnector - new product flyer (lit. cat.# 59505)
For Agilent 5890& 6890 GCs
(0.25/0.32/0.53mm ID columns)
ID*/OD&
Length (mm)
Similar to
Agilent
cat.#
ea.
cat.#
5-pk.
Drilled Uniliner
®
(hole on top)
4.0 ID
6.3OD x 78.5
G1544-
80730
21054
21055
Siltek
™
Drilled Uniliner
®
(hole on top)
4.0 ID
6.3OD x 78.5
— 21054-214.1 21055-214.5
Drilled Uniliner
®
(hole on bottom)
4.0 ID
6.3OD x 78.5
G1544-
80730
20756
20771
Double Gooseneck Drilled Uniliner
®
(hole on top)
4.0 ID
6.3OD x 78.5
G1544-
80700
20508
20509
DoubleGooseneckDrilledUniliner
®
(hole on bottom)
4.0 ID
6.3OD x 78.5
G1544-
80700
20954
20989
Siltek
™
1mmDrilled Uniliner
®
(hole on top)
1.0 ID
6.3OD x 78.5
— 21390-214.1 21391-214.5
For PerkinElmer GCs
(0.32/0.53mm ID columns)
ID*/OD&
Length (mm)
Similar to
PE part#
ea.
cat.#
5-pk.
Auto SYS Drilled Uniliner
®
(hole on top)
4.0 ID
6.2OD x 92.1
— 20819
20822
DrilledUniliner
®
Inlet Liners
*Nominal ID at syringe needle expulsion point.
