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Knowledge Base

[Readers Insight] Why Peak Fronting Occurs? Causes and Analysis

April 14, 2026

Peak fronting is a common chromatographic anomaly characterized by a gradual leading edge and a steep trailing edge, often occurring during method development. This phenomenon stems from multiple causes, thus resolving it can be much more difficult. In this article, we discuss three primary sources of peak fronting and provide technical solutions to mitigate these effects and optimize chromatographic performance.

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[Readers Insight] When to Use Acetone as a Mobile Phase?

April 12, 2026

Acetone is a versatile solvent in chromatography, yet its application as an HPLC mobile phase remains limited to specific cases like Sudan dye analysis. This article explores the reasons behind the rare use of acetone and summarizes the key considerations when using acetone as a mobile phase.

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[Readers Insight] Why Does the PDA Detector Remain a Cornerstone of Analytical Laboratories

March 30, 2026

We all know that Mass Spectrometry is preferable for trace analysis due to its superior sensitivity. But why do PDA detectors still maintain a high utilization rate? In this article, we explore the practical advantages PDA holds compared to MS.

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[Readers Insight] Is "Not Detected" Truly "Not Detected"? (Not An Article about LOD)

March 19, 2026

When you encounter "Not Detected" in analytical chemistry, does it truly mean the substance is absent? In practice, unscrupulous manufacturers may try to evade detection of prohibited additives by modifying molecular structures to something out of the detection scope. In this article, the author introduces a method using TOF-IDA/MS to effectively expose such modification without the need of reference standards.

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[Readers Insight] How to Analyze Fragment Ions in Mass Spectrometry?

January 19, 2026

In this article, we investigate the fundamental mechanisms of ion fragmentation within mass spectrometry workflows and explore why systematically mapping fragment-ion structures is essential for deeper mass-spectrometric interpretation. It explores the relationship between electronic displacement and dissociation pathways, emphasizing structural reconstruction over simple pattern recognition.

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[Readers Insight] Asking the Questions Right: A Guide to Troubleshooting Consultations in HPLC Method Development

January 15, 2026

Mastering HPLC method development requires more than technical skill; it demands effective communication. This guide explores how junior scientists can overcome "question anxiety" by utilizing precise data packages and structured inquiries. Learn to transform troubleshooting consultations into professional growth opportunities, ensuring faster resolutions and building lasting laboratory expertise.

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[Readers Insight] The Interplay between Column Properties and Peak Integration

January 14, 2026

In HPLC, the relationship between physical separation hardware and mathematical data processing is often overlooked. This article explores the inconspicuous but critical connection between column properties and the fidelity of peak area calculation, examining why theoretical constancy in integration often fails to align with empirical laboratory observations.

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[Readers Insight] Gradient vs. Isocratic Elution: Which to Choose?

January 6, 2026

In this article, the author evaluates isocratic and gradient elution strategies in HPLC method development, providing expert guidance on selecting elution modes for pharmaceutical assays, impurity profiling, and complex separations.

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[Readers Insight] Hydrophilic Interaction Chromatography (HILIC): A Nemesis to Polar Compounds

December 23, 2025

Polar compounds that refuse to stay on C18 columns can be frustrating. HILIC chromatography provides a versatile solution through partitioning and interaction mechanisms. In this post, we break down HILIC principles, column types, mobile phase strategies, and key method development tips to help you achieve reliable retention and separation.

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[Readers Insight] Triethylamine as a Mobile Phase Additive: What Does It Do?

December 15, 2025

In this article, the author explains the uses of triethylamine as a mobile phase additive in HPLC, with real-world examples from pharmacopoeias and literatural applications.

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[Readers Insight] Why is Formic Acid Added to the Mobile Phase in Mass Spectrometry?

December 11, 2025

Formic acid is commonly seen added to the mobile phase in mass spectrometry methods, but have you wondered what specific role it plays, and can other acids substitute it? This article explains the role of formic acid in MS from the perspective of chemical reaction equilibrium thoroughly.

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[Readers Insight] Heterocycles Structural Analysis in HPLC Method Development

December 1, 2025

In this article, the author analyzes the structures of heterocycles (mostly aromatic heterocycles) and how the structures affect heterocycles' acid-base property.

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