The Knowledge Hub
Practical troubleshooting guides for working analytical chemists — HPLC, UHPLC, LC-MS, GC, and reagent prep. Each guide is diagnostic-first and linked to the tool that resolves it.
Autosampler Carryover in HPLC and LC-MS: How to Find It and Wash It Out
Carryover is one of the quietest ways an autosampler can wreck your data. A trace of analyte left behind from a previous…
HPLC Baseline Noise and Drift: How to Tell Them Apart and Fix Each
An unstable baseline is one of the most common — and most time-consuming — problems in HPLC; by some estimates, baseline issues…
Ghost Peaks in HPLC: What Causes Them and How to Eliminate Them
You inject a blank — pure solvent, no sample — and peaks appear anyway. Or your gradient runs show extra peaks that…
Losing Sensitivity in LC-MS? A Systematic Guide to Ion Suppression and Signal Loss
Few problems in the LC-MS lab are as demoralizing as watching your signal quietly disappear. A method that gave clean, intense peaks…
Why Your HPLC Peaks Are Tailing: Causes and a Diagnostic Path
Peak tailing is one of the most common complaints in HPLC — and one of the most misdiagnosed. A tailing peak inflates…
High Backpressure in HPLC: 8 Root Causes and How to Diagnose Each One
High system backpressure is one of the most common — and most disruptive — problems in liquid chromatography. It interrupts runs, triggers…
Understanding Size Exclusion Chromatography Techniques
If you’re delving into the world of chromatography, you might have come across a technique called size exclusion chromatography (SEC). This method…
Understanding RF Values in Chromatography Techniques
Chromatography is a powerful tool in chemistry. It helps separate and identify compounds in a mixture. A key concept in chromatography is…
How to Develop an HPLC Method: A Step-by-Step Practical Guide
Introduction Developing an HPLC method is one of the most fundamental skills in analytical chemistry. Whether working in pharmaceutical analysis, bioanalysis, environmental…
Understanding Chromatography Resins: A Comprehensive Guide
Title Tag: Chromatography Resin Guide: Types & Applications Chromatography resins are vital in the world of separation science. They play a key…
What is Void Volume in Chromatography?
1. What is Void Volume? The void volume (column void volume or dead volume) is the volume that the mobile phase occupies in…
HPLC Column Care and Maintainance
Ensuring optimum HPLC column performace is important for saving time and cost. The HPLC column peformance and retention characteristics should be monitored…