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21195-U Supelco

GC Stationary Phase

phase Polyethyleneimine, bottle of 50 g



Related Categories Analytical/Chromatography, GC Stationary Phases, Gas Chromatography (GC), Packed GC Columns and Components
packaging   bottle of 50 g
parameter   0-175 °C temp. range
application(s)   gas chromatography (GC): suitable
matrix active group   Polyethyleneimine phase
solubility   acetone: soluble


Frequently Asked Questions

Frequently Asked Questions are available for this Product.

General description

Synthesized specifically to be purer, of narrow molecular weight range, and without trace catalysts or impurities for use as a GC stationary phase.

GC methods are divided into two classes depending on the nature of stationary phases; gas-solid chromatography (GSC) and gas-liquid chromatography (GLC). GSC has solid adsorptive material and solute particles are removed from mobile phase by electrostatic forces. GLC has a thin layer of liquid coated or bonded on the surface of an inert particle or on the walls of the column where solute particles are retained in the liquid phase based on their partition coefficients. The primary necessity of a stationary phase is to provide sample separation sustaining phase integrity over a reasonable period of time. It should be stable for the chemical and thermal changes. Selectivity, peak symmetry, analysis time, degree of separation, peak tailing are few parameters to consider for choosing a stationary phase. Polyethyleneimine (PEI) is suitable for protein separation. It binds insistently to negative charged stationary phase. It is a pseudostationary phase which is also a cationic polymer.

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Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
UN 3082 9 / PGIII
WGK Germany 
Flash Point(F) 
>230 °F
Flash Point(C) 
>110 °C


Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers


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