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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 analytes. Sky® inlet liners from Restek offer excep-
tional inertness, ensuring 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 the 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 bal-
anced deactivation of Sky® liners prevents interactions with many chemical classes. With Sky® inlet liners, you will see improved
sensitivity, accuracy, robustness, and reproducibility from liner to liner, which allows you to quantify challenging compounds at
trace levels with confidence.
Prevent the Loss of Sensitive Analytes—Even When Using Wool
Sensitive analytes like carbaryl and methiocarb readily react with active sites in your inlet, especially when using a liner with
wool. That reactivity makes these compounds difficult to analyze, but excellent for demonstrating inertness (i.e., the reduction of
unwanted reactions between a liner and active compounds). Sky® liners with quartz wool offer superb results for these and other
inertness probes even at low concentrations, whereas other leading deactivations using borosilicate wool show reduced response—
or no response at all. When you are concerned about losing sensitive analytes, feel confident in choosing Sky® liners with wool.
Table I: Relative Response Factors for Sensitive Analytes Using Trace-Level (100 pg on column) Splitless Injection
Carbaryl Methiocarb Captan Folpet
Sky® Liner w/Wool 0.718 0.720 0.380 0.403
Siltek® Liner w/Wool ND ND 0. 087 0. 150
Non-Sky® Liner w/Wool ND ND 0.237 0.290
See Figures 1 and 2 for more details.
GC ACCESSORIES | INLET LINERS
Sky® Inlet Liners
The Story Behind Sky® Liners
For over 25 years, Restek has been a leader in the development and manufacturing of GC and LC products. With
Sky® liners, we created a novel, state-of-the-art deactivation process that provides better performance, lower
detection limits, and unbeatable accuracy and precision—even when using wool. We also took full control of our
production stream to ensure unparalleled reliability and reproducibility. And to prove that every Sky® liner offers
True Blue Performance, each one is backed by a 100% satisfaction guarantee.*
But, why are they blue? Restek has always been associated with the color blue because it signifies strength,
innovation, and excellence. We made Sky® liners blue because it represents the technological advancements and
unmatched quality that define Restek® products and service. Choose blue—the best choice for dependable results.
* For details on our 100% satisfaction guarantee, see