Selectra-SIL Ampules 

 

 

 

SELECTRA-SIL® is an extensive line of derivatizing reagents manufactured 

by UCT at its facility in Bristol, PA. 

Our reagents are designed to increase molecular weight, lower boiling points, and 

create a more specific ion for compounds intended for gas chromatography and GC/MS.

 

 

 

 

 

 

 

 

 

 

 

Benefits of Derivatization:

 

•  Improved chromatographic resolution - increased volatility - reduced intermolecular hydrogen bonding - separation of structurally similar compounds.

•  Improved mass spectral characteristics - higher mass fragments - greater signal to noise ratio - more unique masses- increased abundance/sensitivity 

    of molecular ions.

•  Improved thermal stability of some compounds - reduced thermal degradation - higher temperature to speed analysis.

•  Increased instrument and lab productivity - fewer reinjections or repeats due to peak tailing - high confidence in analyte identification and 

    quantitation - easy to perform - inert by-products of derivatization will not degrade capillary column performance.