Exsil Diametric

Diametrically Different Selectivity
The Optimum Back-up Phase

When a separation fails on a conventional base deactivated, high purity C18 phase, the last thing a customer needs is another phase of similar selectivity. Success is maximised if the selectivity can be engineered to be significantly different from the conventional. Exsil Diametric achieves this by diametrically opposed hydrophobic and silanophillic selectivity compared to standard C18 phases.

Features:

Diametrically different selectivity to standard C18
Best alternative when current C18’s fail to deliver
High polarity reversed phase
High retention of bases for better MS sensitivity
Water Wettable
MS Compatible
Excellent Peak shapes.
Available in 1.5, 3, 5 and 10µm

Instead of trying to convert a customer from their preferred phase, Exsil Diametric C18 can be offered as the best backup column no matter what the customer’s preferred conventional phase.

Tremendous progress has been made over the last decade in the production of reversed phase packings which show minimal tailing with difficult compounds such as acids, bases and chelates. There are now many C18 packings that are capable of excellent performance on virtually all samples. However, a careful study of these packings shows that they follow common design principals: high phase loading and extensive end capping leading to highly hydrophobic/low silanophillic phases.

This combination of attributes works well but the complexity of current day samples means that in some cases, the selectivity will be inadequate. In this case, changing to another phase of similar attributes is unlikely to deliver the required change in selectivity.

Exsil Diametric C18 delivers distinctly different selectivity

The phase gives a diametrically opposite hydrophobic/silanophillic balance to conventional C18 phases and maximises the possibility of improvement in the resolution of the sample.

Instead of trying to convert a customer from their preferred phase, Exsil Diametric C18 can be offered as the best backup column no matter what the customer’s preferred conventional phase.

More informations: www.exmere.eu

Aplications end demo pls contac us

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