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Reference Standards
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Exempted Drug of Abuse Reference Standards
Ultra II™ HPLC Prep Columns
- Easy scale-up from Restek analytical columns.
- Popular bonded phases.
Restek makes it easy to scale up your separations. We offer a wide range of semipreparative and preparative-scale columns packed with many of our popular Ultra, Ultra II, Allure®, Pinnacle® DB, Pinnacle® II, and Viva bonded phases on a 5µm spherical silica. Other stationary phases and particle sizes are also available--if you need a phase on 7µm, 10µm or 15µm particles, please call.
High density bondings, for maximum retention. Restek manufactured, high-purity, type B silica gives excellent peak shapes for a wide range of compounds.
Please note: We strongly recommend ordering a semi-prep or prep column only after evaluating the desired separation on an equivalent analytical-scale column. Because we cannot re-use a column or the silica it contains once it has left our facility, we cannot accept returns of large-scale columns (except in cases of our error).
