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007-5MS Silphenylene Polysiloxane | Quadrex Corp

Advertiser: JOHN Lipsky Location: Woodbridge Posted: Apr 3, 2018 6:46:01 AM Hits: 127

Ref: CS159731
Traditional polysiloxane-type GC stationary phases degrade at elevated temperatures. The degradation process is well documented and consists of the thermal rearrangement of the siloxane backbone to produce cyclic groups. These groups are volatile and elute from the column as column 'bleed'. The silphenylene units (Fig. 1) within the 007-5MS backbone act as heat sinks and limit the formation of the cyclic groups normally associated with polysiloxane degradation.

The 007-5MS silphenylene columns offer the chromatographer a number of advantages:

Greater thermal stability
Greater resistance to oxygen degradation
Fast ramping to elevated temperatures to purge the column of residual components
Improved analysis of trace level compounds
Less baseline bleed equals less baseline noise, which results in lower detection limits
Increased column lifetimes
Reduced contamination of ms sources and other gc detector surfaces

More details: https://quadrexcorp.com/index.php?route=information/information&information_id=15

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