What is the chemical structure of the ligand in the Cogent DIOL HPLC stationary phase – FAQ Read More →
What is the compatibility of Cogent TYPE-C Silica HPLC columns with UHPLC instruments – FAQ Read More →
What is the maximum loading capacity mass injection volume that can be used for a semi prep Cogent TYPE-C HPLC column – FAQ Read More →
What is the most effective way to clean HPLC columns after or before use – Tips & Suggestions Read More →
What is the purpose of using isopropanol IPA as part of the mobile phase solvent in ANP methods – FAQ Read More →
What problems can occur when using a dedicated Reversed Phase HPLC instrument for an Aqueous Normal Phase ANP method for the first time – FAQ Read More →
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 Read More →
Which acid or base additive should I choose for positive or negative ion mode in LC-MS – FAQ Read More →
Which Cogent TYPE-C column do you recommend for the separation of positional isomers with HPLC or LCMS – FAQ Read More →
Why do I have lower than normal back pressure with Cogent Diamond Hydride HPLC columns – FAQ Read More →
Why do I see large intermittent pressure spikes in HPLC runs and can it be a defective column – FAQ Read More →
Why does the metal content of a silica particle contribute to the peak shape of my chromatogram in HPLC – FAQ Read More →
Why you should use temperature control with the UDC-Cholesterol column – Tips & Suggestions Read More →
Will TFA permanently alter retention / selectivity of the Cogent TYPE-C silica columns – FAQ Read More →