Figure 1 Endrin and DDT breakdown is significantly reduced with Sky™ liners, demonstrating
higher inertness.
www.restek.com 207
Peaks
1. DDE*
2. Endrin
3. DDD*
4. Endrin aldehyde*
5. DDT
6. Endrin ketone*
*breakdown products
Column Rxi
®
-5Sil MS, 15 m, 0.25 mm ID, 0.25 µm (cat.#
13620); Sample endrin (50 ng/mL) and DDT (100 ng/mL) in
hexane; Injection Inj. Vol.: 1 µL splitless (hold 0.75 min.);
Liner: Comparison of Sky™ Single Taper Gooseneck Liner
with Wool (cat.# 23303.5) and Agilent Single Taper
Gooseneck Liner with Wool (cat.# 5062-3587); Inj. Temp.:
250 °C.
GC_EV1200
GC_EV1202
Inert Sky™ liners reduce
analyte breakdown, giving
you more accurate results.
1
2
3 4
5
6
1
2
3 4
5
6
Restek Sky™ Inlet Liner
Single taper gooseneck
with wool
Agilent
Single taper gooseneck
with wool
Simple Solutions:
Inert Sky™ Inlet Liners Improve Accuracy and Precision for a Wide Range of Analytes
Many chromatographic problems, such as poor response and missing or tailing peaks are caused by activity in
the inlet liner. These effects complicate quantification and can be particularly problematic for sensitive ana-
lytes. New Sky™ inlet liners from Restek offer exceptional inertness, assuring enhanced transfer of analytes to
the column, good response, and highly symmetric peaks. The inertness of these liners is due to a state-of-the-
art deactivation process that completely passivates the liner and wool so that they are inert to a wide variety of
reactive analytes.
Some deactivations, such as base deactivation, are effective only for particular target compound chemistries.
In contrast, the balanced deactivation of Sky™ liners prevents interactions with many chemical classes. As
shown on the following pages, complex pesticide probes, as well as both acidic and basic compounds have
strong responses and excellent peak shapes, demonstrating the inertness of Sky™ liners. With new Sky™ inlet
liners you will see improved sensitivity, accuracy, and reproducibility liner-to-liner, which allows you to quan-
tify challenging compounds at trace levels with confidence.
Reduced Breakdown Improves Trace Analyses
Endrin & DDT are important analytes for the environmental and food safety industries, and also serve as
excellent general probes for liner inertness. Both compounds are sensitive to different modes of activity due to
their chemical structures and because they are analyzed at very low concentrations (typically parts-per-billion
concentrations for µECD analyses). As shown in Figure 1, Sky™ liners are significantly more inert than com-
parable liners from Agilent, showing 3-4 times less endrin and DDT breakdown.
% Breakdown
endrin
4.8
16.5
DDT
1.3
4.2
Restek
Agilent
did you
know
Sky™ inlet liners from Res
are extensively tested to
assure consistent produc
quality. The color and lab
have been shown not to
interfere with analyses or
contribute to backgroun
Choose blue—the best li
for sensitive applications.
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA Mar