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Dionex Ion-Exclusion Packed Columns

In ion-exclusion separations, Donnan exclusion causes strong acids to elute in the void volume of the column. Weak acids that are protonated in the acidic eluent are not subject to Donnan exclusion and penetrate into the pores of the resin. Separation is accomplished by differences in pKa, size, and hydrophobicity.


Item Name Product Image Price

Dionex IonPac ICE-AS1 Analytical Column (4 x 250 mm) - 064198

Ion-Exclusion Column for Fast Analysis of Aliphatic Organic Acids and Alcohols in Complex SamplesThe IonPac® ICE-AS1 ion-exclusion column provides...
Dionex IonPac ICE-AS1 Analytical Column (4 x 250 mm) - 064198
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Dionex IonPac ICE-AS1 Analytical Column - 043197

Ion-Exclusion Column for Fast Analysis of Aliphatic Organic Acids and Alcohols in Complex SamplesThe IonPac® ICE-AS1 ion-exclusion column provides...
Dionex IonPac ICE-AS1 Analytical Column - 043197
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Dionex IonPac ICE-AS1 Guard Column (4 x 50 mm) - 067842

Ion-Exclusion Column for Fast Analysis of Aliphatic Organic Acids and Alcohols in Complex SamplesThe IonPac® ICE-AS1 ion-exclusion column provides...
Dionex IonPac ICE-AS1 Guard Column (4 x 50 mm) - 067842
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