HPLC Guard Columns and Cartridges
MilliporeSigma™ Chromolith™ Phenyl Guard Cartridge
Added directly in front of the main column to protect it from chemical or mechanical contamination
MilliporeSigma™ Supelco™ Astec™ CHIROBIOTIC TAG Chiral HPLC Guard Cartridge, 5 μm Particle Size
For use with Astec™ CHIROBIOTIC TAG Chiral HPLC columns
MilliporeSigma™ Supelco™ SUPELCOSIL™ LC-ABZ Supelguard Cartridge, 5 μm Particle Size
SUPELCOSIL™ LC-ABZ phase has a unique deactivation technology which provides excellent reversed-phase performance for basic compounds, as well as those that are acidic, polar neutral, and non-polar.
MilliporeSigma™ Supelco™ Ascentis™ RP-Amide Supelguard™ Guard Cartridge Kit, 5 μm Particle Size
Ascentis™ RP-Amide is a new generation ultra low bleed, embedded polar group (EPG) phase that provides orthogonal selectivity and increased resolution for HPLC and LC-MS analysis of polar compounds. The Ascentis™ RP-Amide is the first choice in embedded polar group HPLC phases.
MilliporeSigma™ Supelco™ Discovery™ HS F5 Supelguard™ Cartridge, 5 μm Particle Size
The Discovery™ HS F5 bonded phase provides reversed-phase separations that are distinctly different from C18 columns. However, compounds will generally elute within the same retention time window, making most C18 methods easily transferable.
MilliporeSigma™ Supelco™ Supelguard™ Guard Cartridge Holder - Direct-Connect
For use with Supelguard cartridge (2 cm L. x 3 to 4.6 mm I.D.)
MilliporeSigma™ Supelco™ Ascentis™ Express C18 Guard Cartridge, 5 μm Particle Size
Ascentis™ Express Guard Columns provide physical (filtration) and chemical protection for costly analytical columns without compromising the very high performance of Ascentis™ Express columns.
MilliporeSigma™ Supelco™ Ascentis™ Express F5 Guard Cartridge, 2 μm Particle Size
Ascentis™ Express Guard Columns provide physical (filtration) and chemical protection for costly analytical columns without compromising the very high performance of Ascentis™ Express columns.
MilliporeSigma™ Supelco™ SUPELCOSIL™ LC-Diol Supelguard Cartridge Kit, 5 μm Particle Size
LC-Diol columns can be used to separate proteins by gel filtration chromatography.
MilliporeSigma™ Supelco™ SUPELCOSIL™ LC-1 Supelguard Cartridge, 5 μm Particle Size
Due to a mixed retention mechanism, selectivity differences for polar groups are more pronounced than on C8 and C18 columns. C1 columns require 20-30% less organic modifier to provide retention similar to C18 columns.
MilliporeSigma™ Supelco™ SUPELCOSIL™ LC-Si Supelguard Cartridge Kit, 5 μm Particle Size
A typical mobile phase used with normal-phase silica columns consists of a hydrocarbon solvent such as hexane or heptane, mixed with a relatively small percentage of more polar solvent.
MilliporeSigma™ Supelco™ SUPELCOSIL™ LC-CN Supelguard Cartridge, 5 μm Particle Size
The LC-CN phase is often used as a substitute for silica because it offers the advantages of a bonded phase (such as quick equilibration, and less sensitivity to small changes of the water content in the mobile phase).