How does ammonium fluoride affect HPLC and LCMS data if using Aqueous Normal Phase ANP methods – FAQ Read More →
Issues arising from changes in mobile phase with acids to one with ammonium salts. Tips & Suggestions Read More →
Suggestion for separation of phenylephrine HCl acetaminophen and dextromethorphan – Tips & Suggestions Read More →
Use a low concentration of salt in your mobile phase to avoid ion suppression and build up on your inlet source – Tips & Suggestions Read More →
Using methanol instead of acetonitrile in an HPLC method should be done with caution – Tips & Suggestions Read More →
What is the compatibility of Cogent TYPE-C Silica HPLC columns with UHPLC instruments – FAQ Read More →
What is the maximum salt concentration to use with Cogent TYPE-C HPLC columns with HPLC or LCMS – FAQ Read More →
What is the purpose of using isopropanol IPA as part of the mobile phase solvent in ANP methods – FAQ Read More →
Which Cogent TYPE-C column do you recommend for the separation of positional isomers with HPLC or LCMS – FAQ Read More →
Which column do you suggest for Cocaine & metabolite Ecognin separation – Tips & Suggestions Read More →