Knowledge Base
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![[Readers Insight] Chromatographic Separation Strategies for Multi-Component Analysis](//www.welch-us.com/cdn/shop/articles/1080-multi-component_535x.jpg?v=1773651844)
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[Readers Insight] Chromatographic Separation Strategies for Multi-Component Analysis
Mass spectrometry simplifies multi-component analysis, but chromatographic separation remains essential for challenging cases. This article explores enhancements in gradient elution, column selection, temperature, flow rate, and mobile phase composition for separation efficiency and resolution. -
Gradient Optimization in Liquid Chromatography
In this article, we explore key considerations in gradient method development, and witness how optimizing gradient elution in HPLC is key to achieving efficient separation through a real-world case study. -
Mastering the HPLC Autosampler: This Guide is All You Need
The HPLC autosampler is a key component for precise and efficient chromatography. This guide covers autosampler designs, injection methods, and essential maintenance practices to ensure accurate and reliable results. -
A Comprehensive Guide to Guard Columns and Pre-Columns
This guide explores key differences, functions, replacement guidelines, and selection criteria of guard columns and pre-columns (in-line filters) to help ensure optimal chromatographic performance and extended column lifespan. -
A Simple Yet Effective Trick for Isomer Separation
In this article, we explore a simple yet effective trick in the elution program for isomer separation, with two examples to show how this trick works. -
Key Concepts and Considerations of Preparative Liquid Chromatography
In this article, we discuss 10 essential aspects of preparative liquid chromatography, including definition, applications, workflow, key parameters, classification, difference from analytical LC, and practice. -
Unraveling the Case: Reasons Behind Poor LC RSD
A real-world case of poor reproducibility in LC analysis, with a general conclusion of common issues that cause RSD to be high. -
Issues and Solutions to the Use of Ion-Pairing Reagents
Explore the mechanism of ion-pairing reagents, and common issues and solutions when using ion-pairing chromatography. -
Amino (NH2) Column: How to Keep High Performance?
Introduce the principle of amino columns (nh2 columns) and the guidelines for optimizing amino column performance in reversed-phase and normal-phase mode. -
Analytical Method for 18 Amino Acids
In this article, we share an application of an analytical method for 18 amino acids. Derivatization is employed in this method, and Welch Ultisil Amino Acid Column is used for analysis. -
Does Smaller Column Particle Size Always Lead to Better Resolution in Liquid Chromatography?
In this article, we explore how particle size affects resolution in liquid chromatography through two real-world applications, and analyze why these cases show different results from common belief. -
![[Reader Insight] Optimizing Matrix Curve Quantification in Mass Spectrometry](//www.welch-us.com/cdn/shop/articles/quantification-1080-1220_535x.webp?v=1773651723)
![[Reader Insight] Optimizing Matrix Curve Quantification in Mass Spectrometry](//www.welch-us.com/cdn/shop/articles/quantification-1080-1220_345x345@2x.webp?v=1773651723)
[Reader Insight] Optimizing Matrix Curve Quantification in Mass Spectrometry
In this article, the author explains matrix curve quantification in mass spectrometry, and offers strategies to minimize matrix effects and enhance accurate quantification.
![[Readers Insight] Chromatographic Separation Strategies for Multi-Component Analysis](http://www.welch-us.com/cdn/shop/articles/1080-multi-component_535x.jpg?v=1773651844)
![[Readers Insight] Chromatographic Separation Strategies for Multi-Component Analysis](http://www.welch-us.com/cdn/shop/articles/1080-multi-component_345x345@2x.jpg?v=1773651844)
![[Reader Insight] Optimizing Matrix Curve Quantification in Mass Spectrometry](http://www.welch-us.com/cdn/shop/articles/quantification-1080-1220_535x.webp?v=1773651723)
![[Reader Insight] Optimizing Matrix Curve Quantification in Mass Spectrometry](http://www.welch-us.com/cdn/shop/articles/quantification-1080-1220_345x345@2x.webp?v=1773651723)