Category: HPLC Column Information
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Sub Categories
Glucose pyruvate taurocholic acid gamma glutamylcysteine and other analysis - Tips & Suggestions
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High molecular weight compounds that won't retain on Cogent Diamond Hydride column try Cogent Bidentate C8 300 - Tips & Suggestions
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How to determine concentration of an impurity in HPLC with the relative response factor RRF - How to
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How to eliminate retention time drift in LCMS with Aqueous Normal Phase ANP methods - Tips & Suggestions
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How to Get Improved Retention and Peak Shape for Glutamine Glutamic Acid and Aspartic Acid - Tips & Suggestions
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How to improve peak shapes, retention & carryover for polar compounds with the Cogent Diamond Hydride™ column - Tips & Suggestions
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How to keep the Cogent Diamond Hydride column clean when using blood as a sample - Tips & Suggestions
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I am not observing any peaks for succinic acid or alpha-ketoglutarate with the Cogent Diamond Hydride column - Tips & Suggestions
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Injection Technique for Aqueous Samples using Cogent TYPE-C Columns in ANP - Tips & Suggestions
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Issues arising from changes in mobile phase with acids to one with ammonium salts. Tips & Suggestions
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Lower retention is observed when functional group in a compound is ionized - Tips & Suggestions
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Metal free Dursan Coated Stainless Steel HPLC Columns Comparison to PEEK Column Performance - Tips & Suggestions
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Mobile Phase recommendation Cogent Diamond Hydride columns for use with serum samples in Aqueous Normal Phase LCMS - Tips & Suggestions
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Modify selectivity in an ANP method of HPLC using different mobile phase pH - Tips & Suggestions
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Restoring the initial results with a method for analyzing AMP ADP ATP UDP and GPT in biological extracts - Tips & Suggestions
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Solvents and solutions that should be avoided when using PEEK filters fittings or tubing - Tech Information
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Solving baseline problems in ANP methods with the Cogent Diamond Hydride column - Tips & Suggestions
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Suggestion for separation of phenylephrine HCl acetaminophen and dextromethorphan - Tips & Suggestions
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Troubleshooting problems with poor HPLC runs before the examining the column - Tips & Suggestions
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Understanding some of the differences between HILIC columns and TYPE-C columns - Tips & Suggestions
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Use a low concentration of salt in your mobile phase to avoid ion suppression and build up on your inlet source - Tips & Suggestions
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Using temperature changes for separations of terpenoids with the Cogent Bidentate C18 and UDC-Cholesterol HPLC columns - Tips & Suggestions
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Using two HPLC columns together in a tandem separation for polar and non polar retention - Tips & Suggestions
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What are some notable examples of journal articles that feature Aqueous Normal Phase ANP methods in metabolomics studies - FAQ
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What are the main differences between Cogent Amide columns and other brands of Amide - 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 is the bonded phase of the Cogent PFP HPLC column and for which applications is it used - FAQ
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What Is the Difference Between Weak and Strong Cation Exchange in Ion Exchange Chromatography - FAQ
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What is the most effective way to clean HPLC columns after or before use - Tips & Suggestions
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What is the Pilot Length or Dimension X Depth for End Fittings Uses to Connect HPLC Columns - FAQ
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What pressure should I expect with a Diamond Hydride 2.o HPLC column at flow rates from 0.2 to 2.0mL / min - FAQ
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Which Cogent TYPE-C column do you recommend for the separation of positional isomers by HPLC or LCMS - FAQ
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Which column do you suggest for Cocaine & metabolite Ecognin separation - Tips & Suggestions
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