What are the main differences between Cogent Amide columns and other brands of Amide – FAQ Read More →
How do I avoid distorted peak shapes when using a basic mobile phase pH for the analysis of a lipophilic amine – FAQ Read More →
What is the main difference between ordinary and LCMS compatible polypropylene vials – FAQ Read More →
Which Cogent TYPE-C column do you recommend for the separation of positional isomers with HPLC or LCMS – FAQ Read More →
How to prepare 10mM ammonium acetate buffer 90:10 in acetonitrile for HPLC and LCMS – Tips & Suggestions Read More →
Causes of high baseline noise with Cogent Diamond Hydride HPLC column – Tips & Suggestions Read More →
What are the temperature specifications of the autosampler vial storage box and cap for 4ml vials – FAQ Read More →
Why does the color of the Holmium Oxide solution for HPLC performance qualification look different than before – FAQ Read More →
What is the internal diameter of the opening for 8mm crimp top BASIK brand autosampler vials – FAQ Read More →
Can I use vial 95025-VN-05C with crimp cap 95025-08-1S in an oven at 105C for approximately 1 month – FAQ Read More →
Can I choose HPLC mobile phase percentages other than those used in the HSQ Spreadsheet – FAQ Read More →
How to determine concentration of an impurity in HPLC with the relative response factor RRF – How to Read More →
What are some common sources of variance during sample preparation in an analytical application – FAQ Read More →
Protecting HPLC analytical columns and when to use guard columns vs Cogent Column Filters – Tips & Suggestions Read More →