Is TFA or formic acid better as an acidic mobile phase additive for Cogent TYPE-C columns – FAQ Read More →
Is there a difference in the properties of different colors of rubber in vial cap septa – FAQ Read More →
Issues arising from changes in mobile phase with acids to one with ammonium salts. Tips & Suggestions Read More →
LFER studies compared to Log D data in describing the Aqueous Normal Phase ANP retention – Tips & Suggestions Read More →
Lower retention is observed when functional group in a compound is ionized – Tips & Suggestions Read More →
Metal free stainless steel HPLC columns comparison to PEEK column performance – Tips & Suggestions Read More →
Mobile Phase recommendation Cogent Diamond Hydride columns for use with serum samples in Aqueous Normal Phase LCMS – Tips & Suggestions Read More →
Modify selectivity in an ANP method of HPLC using different mobile phase pH – Tips & Suggestions Read More →
My LCMS source was getting white film on it and at the same time the background noise was very low so is my Diamond Hydride column bleeding packing material – FAQ Read More →
My retention times are changing after storing my buffer and what could be causing this and tips to help avoid issues – FAQ Read More →
No need to use a high pH mobile phases for compounds with a high pKa – Tips & Suggestions Read More →
Peaks are broad and non symmetrical in LCMS method using Reversed Phase columns – Tips & Suggestions Read More →
Pre mix your diluent and mobile phase in sample preparation for HPLC – Tips & Suggestions Read More →