Category: TYPE-C in General FAQ
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Analyte retention decreases with mobile phase water content using the Cogent Bidentate C18 HPLC column has anything happened to the column - FAQ
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Aqueous Normal Phase ANP Ballistic Gradients Compared to Same in HILIC - Tips & Suggestions
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Aqueous Normal Phase defined & compared to Reversed Phase & Normal Phase definitions HPLC - Tech Information
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Are there HPLC columns that could be used to separate both polar and nonpolar compounds in a single run - FAQ
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Can I use a silica or Silica-C guard column with an analytical column of a different phase - FAQ
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Do Cogent TYPE-C Silica columns have a partial positive charge and if so is retention for basic compounds reduced because of this - Tech Information
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Do Tanaka Plots for HPLC apply to columns used with Aqueous Normal Phase ANP methods - FAQ
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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 Can Cogent TYPE-C HPLC Columns Offer Faster Results Compared to Other Type of Silica Based Columns - FAQ
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How Can I Fix Poor Peak Shape for Phosphorylated Compounds in Aqueous Normal Phase ANP Methods - Tips & Suggestions
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I heard that there is not a good alternative to HILIC to achieve sufficient retention for some compounds - FAQ
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Increasing Selectivity and Resolution for a Xylose and Ribose HPLC Method Resolution - Tips & Suggestions
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Is TFA or formic acid better as an acidic mobile phase additive for Cogent TYPE-C columns - FAQ
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Since Cogent TYPE-C columns can be used in Reversed Phase or Normal Phase what do you suggest to switch these solvent systems which are not miscible - FAQ
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Since Cogent TYPE-C Silica columns use a transition metal catalyst in production what is the presence of any trace quantity on the surface of the stationary phase- 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 compatibility of Cogent TYPE-C Silica HPLC columns with UHPLC instruments - FAQ
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What will the pressure be with a mobile phase of 90% methanol and 10% DI water with a 4.6 x 250mm Cogent TYPE-C HPLC column - FAQ
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