Knowledge Base

Beyond the Enclosure: Redefining Explosion-Proof Preparative HPLC Systems

March 24, 2026

Explosion-proof preparative HPLC is no longer just about a flameproof cabinet. In biopharmaceutical production, true safety means integrating explosion protection, hygienic design, and GMP-ready compliance across the entire system—from fluid path to software. Read this article to see how Welch Materials' WelPacker DAC provides a trustworthy, high-efficiency solution for the complex challenges of purification in hazardous environments.

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Precision Characterization of Recombinant Humanized Type III Collagen: Navigating Analytical Challenges with Xtimate Bio SEC

March 23, 2026

In this article, we explore the analytical challenges of recombinant humanized type III collagen and show how Xtimate Bio SEC columns support accurate purity and aggregate profiling. The article also highlights the role of SEC in quality control and demonstrates strong chromatographic performance for collagen characterization.

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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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The Critical Role of Chiral Separation and Its Modern Solutions

February 24, 2026

Chirality can mean the difference between medicine and catastrophe. In this article, we summarize the necessity of enantiomeric precision and explain how our Blossmate chiral columns offer flexible, MS-compatible solutions for analytical and preparative workflows, with chromatograms comparing our and competitor's column performances.

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Advancing Metabolic Therapeutics: An Overview of Retatrutide and the Analytical Rigor of Peptide Quantification

February 9, 2026

Retatrutide is a new synthetic peptide that facilitates weight loss through a dual-action mechanism. In this article, we utilize an Ultisil LP-C18 column for the determination of Retatrutide that achieves baseline separation with high resolution records.

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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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LP Columns: More Than Just Tolerating Strong Acids

December 31, 2025

Ultisil LP columns from Welch Materials are designed for low-pH chromatographic conditions, yet their advantages are more than simply resistance to strong acids. Read this article to learn how these columns outperform in a unique way.

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High-Resolution SEC-HPLC Aggregation Analysis of a Pembrolizumab Biosimilar Using Welch Xtimate™ SEC Columns

December 29, 2025

This application note presents a robust SEC-HPLC method for high-resolution aggregation analysis of a Pembrolizumab biosimilar using Welch Xtimate™ SEC-300 columns. The method demonstrates excellent separation of monomer, HMW aggregates, and LMW fragments, supporting routine QC and biosimilar comparability studies.

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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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