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Zirconia (ZrO2) Columns



Zirconia or zirconium dioxide (Zr02) is a metal oxide that exists in a variety of crystalline and amorphic forms. The chief advantage of Zirconia in comparison with the traditional silica base packings is its unique and specific selectivity as well as outstanding thermal stability and chemical resistance.
In contrast to silica, Zirconium is totally stable within the complete pH range (0-14) and allows operation at temperatures as high as 200°C.
With respect to the polymeric packings on the market, Zirconia has an advantage in its exceptional mechanical resistance, and in not having the problems of incompatibility with certain organic solvents as is the case with the polymeric packings.
Available in a variety of particle sizes, between 3 and 20 μm, the operation of separations from ultrarapid to semi preparative is possible.

• Superior selectivity and better chromatographic peaks in the separation of basic compounds.
• Easy transfer of methods from conventional ODS columns.
• Stable between pHs of 1 to 14.
• Excellent thermal stability for rapid separations.
• High efficiency (> 120,000 plates/metre.)

Zirchrom™ -PDB

Composed of particles of ultra -stable Zirconia, coated with fine layer of cross linked polybutadiene. Its selectivity for non-ionizable compounds is similar to that of traditional packings C8 or C18. In the case of ionizable compounds, multiple secondary interactions can help the appropriate resolution of analytes, permitting a practically unlimited adjustment of operating conditions.
Thanks to its thermal stability, times of analysis can be reduced by half simply by raising the operating temperature into the 50°C range.

Zirconia (ZrO2) Columns

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