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Category: HPLC Suggestions and Information
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HPLC Suggestions and Information
Back Flush and Wash an HPLC Column for Reuse - Tips & Suggestions
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Cleaning HPLC Columns After or Before Use - HPLC Primer
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Column ID Considerations for LCMS Applications - Tech Information
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Column Protection Suggestion for a 1mm Cogent 2.o Column - Tech Information
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Cut PEEK tubing using a Clean Cut90 cutter - How to
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Cut stainless steel tubing for HPLC properly - How to
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Differences Between HILIC Columns and ANP Columns - Tech Information
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Do You Really Need High pH for Retention in HPLC - Tips & Suggestions
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High‑Molecular‑Weight Compounds Fail to Retain on the Cogent Diamond Hydride Column — and the Correct Column to Use - Tips and Suggestions
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How can I fix split peaks with high back pressure in HPLC analyses - FAQ
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If I do not remove gas from my mobile phase solvents what are the consequences - FAQ
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Integrate a peak with a shoulder - How to
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Ion Content Differences Between Clear and Amber Borosilicate Glass Vials – Tech Information
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L-Tyrosine, A Tip for Promoting Analyte Ionization with LCMS – AppNote
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Measure signal to noise ratio in an HPLC chromatogram - How to
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Missing peaks using UV detection in HPLC methods - Tech Information
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Not Seeing an Expected Peak in an HPLC Assay - Tips & Suggestions
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Obtain a flat baseline in a gradient method without using blank subtraction - How to
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Phospholipid Separations by HPLC - Tips & Suggestions
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pK Values of common chemical functional groups in HPLC - PRIMER
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Polar and Mixed‑Polarity Metabolites Strategy Using Panel Method Cogent Diamond Hydride - Tips and Suggestions
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Polar Compounds are Not Well Retained by Reversed Phase Columns Explained - HPLC Primer
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Precision in Analytical Analysis Definition Made Easy - PRIMER
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Purge metals from HPLC system using EDTA - How To
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Saw Tooth Pattern in the UV Baseline - Troubleshooting
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System suitability Requirements for a USP HPLC Method - Tips & Suggestions
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Techniques to prepare a 0.05% solution from a tablet for HPLC injection - How to
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TFA Does Not Permanently Alter Cogent TYPE-C Silica Columns - Tech Information
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Types of Chemical Isomers and Recommended HPLC Columns for Effective Separation - Tips & Suggestions
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Use Teflon bottles for A and B solvents in negative ion mode LCMS - HPLC Primer
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What are the Differences Between Nylon and PTFE Syringe Filters for Chromatography - FAQ
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What can cause changing retention times and a peak showing up in my blank with a Silica-C column - FAQ
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What effect does high injection volume have on column performance in Aqueous Normal Phase ANP HPLC- FAQ
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What is the maximum concentration of ammonium fluoride to use in a mobile phase to avoid column damage - Tips & Suggestions
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When Should You Use Snap Caps vs. Screw Caps - Tech Information
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Why am I seeing multiple peaks in HPLC runs of fructose - Tips & Suggestions
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Why are the Cogent Silica-C columns more stable than other silica columns - FAQ
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Why is isopropanol rarely used as a solvent in HPLC or LCMS methods - FAQ
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Will a different guard column hardware system different from the Cogent system affect my results when using a Cogent column - FAQ
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