SPE purification of fermented food extracts before LC-MS testing

SPE Cleanup for LC-MS Analysis of Fermented Food Products

Leave a Comment / Food Safety Testing / By /

1. Chemical Complexity of Fermented Foods Fermented food products represent some of the most analytically challenging matrices in food science. From wine and beer to cheese, yogurt, kimchi, and soy sauce, these products contain a complex mixture of compounds generated through microbial metabolism. The fermentation process transforms raw materials into products containing organic acids (lactic, […]

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Cold cathode gauge mounted on chamber during venting process

Cold Cathode Gauge Behavior During Rapid Venting

Leave a Comment / Maintenance & Troubleshooting / By /

Effect of Sudden Atmospheric Exposure on Cold Cathode Gauges Cold cathode ionization gauges, such as Poseidon Scientific’s VG-SM225, are designed for reliable operation in the high-vacuum regime from 10⁻³ Torr down to 10⁻⁷ Torr. When a vacuum chamber undergoes rapid venting to atmosphere, however, the gauge experiences an abrupt transition into the low-vacuum region where

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SPE cartridge extraction of endocrine disrupting chemicals from river water

SPE Enrichment of Trace Endocrine Disruptors in River Water

Leave a Comment / Environmental Analysis / By /

Environmental Concern of Endocrine Disruptors (BPA, Nonylphenol) Endocrine-disrupting chemicals (EDCs) represent one of the most pressing environmental challenges of our time. Bisphenol A (BPA) and nonylphenol are two prominent EDCs that have garnered significant regulatory and scientific attention due to their widespread occurrence in aquatic environments and potential health impacts. These compounds mimic or interfere

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Vacuum gauge mounted on industrial metallizing chamber

Vacuum Gauge Selection for Vacuum Metallizing Systems

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Introduction: Vacuum Metallizing Process Overview Vacuum metallizing remains one of the most widely adopted physical vapor deposition techniques for applying thin aluminum films to substrates such as plastic films, paper, and molded parts. The process occurs inside a sealed vacuum chamber where aluminum wire or boats are resistively heated to temperatures exceeding 1,000 °C, causing

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SPE purification workflow used for nitrosamine impurity testing

SPE Workflows for Detecting Nitrosamines in Pharmaceutical Products

Leave a Comment / Pharmaceutical Analysis / By /

Overview of Nitrosamine Contamination Concerns in Pharmaceuticals Nitrosamine contamination has emerged as one of the most significant quality control challenges facing the pharmaceutical industry in recent years. These potentially carcinogenic impurities, formed through reactions between secondary or tertiary amines with nitrosating agents, have been detected in various drug products including angiotensin II receptor blockers (ARBs),

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Compact vacuum gauge installed on laboratory R&D equipment

Selecting Vacuum Gauges for Laboratory R&D Equipment

Leave a Comment / Product Selection Guide / By /

Selecting Vacuum Gauges for Laboratory R&D Equipment In laboratory research and development environments, vacuum measurement is rarely a one-size-fits-all proposition. Scientists and engineers working with mass spectrometers, scanning electron microscopes, vacuum heat-treatment furnaces, and custom analytical instruments require gauges that deliver reliable performance across fluctuating pressures while fitting tight spatial constraints and integrating seamlessly with

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SPE extraction of pharmaceutical metabolites from wastewater samples

SPE Sample Preparation for Monitoring Pharmaceutical Metabolites in Wastewater

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Wastewater Epidemiology and Pharmaceutical Metabolites Wastewater epidemiology has emerged as a powerful tool for monitoring community-level pharmaceutical consumption and environmental contamination. This approach involves analyzing wastewater influent to detect pharmaceutical metabolites, providing real-time data on population health trends and environmental impact. Pharmaceutical metabolites enter wastewater systems through human excretion, with many parent compounds undergoing partial

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Vacuum gauge mounted on solar panel coating chamber

Vacuum Gauge Applications in Solar Panel Manufacturing

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The Role of Vacuum in Thin Film Solar Cell Production Thin film solar technologies—including CIGS, CdTe, amorphous silicon, and perovskite tandem cells—rely on vacuum-based deposition to achieve the high-efficiency, uniform layers that define modern photovoltaic performance. Vacuum environments eliminate oxygen and moisture, prevent oxidation of sensitive absorber materials, and enable precise control of plasma or

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Vacuum gauge connected to long term data logging system

Reducing Measurement Drift in Long-Term Vacuum Processes

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Understanding Measurement Drift in Vacuum Gauges Measurement drift in vacuum systems is the gradual, unintended shift in gauge output over time, even when the actual chamber pressure remains constant. For long-term processes—such as optical coating runs lasting 24–72 hours, vacuum heat treatment cycles, or continuous mass-spectrometer operation—drift as small as ±5 % can compromise film

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