Faq

Stability studies evaluate how pharmaceuticals, environmental small molecules, and metal‑ion solutions behave under stresses like elevated temperature, freezing, and light exposure. This guide systematically examines mechanisms such as oxidation, hydrolysis, isomerization, ice‑crystal exclusion, and photodegradation, and reviews measurement techniques—including DSC, UV‑Vis, DLS, and HPLC‑MS—providing a robust framework for designing accelerated testing protocols across key environmental stressors.

Syringe filters are essential consumables in organic-phase HPLC sample preparation, protecting columns and detectors from particulates and contamination. This guide compares the characteristics of PTFE, Nylon, PVDF, and PC membrane filters—discussing solvent compatibility, flow rates, protein binding, extractables and best use cases—to help labs select the most suitable membrane for reliable and reproducible analysis workflows.

In ultra‑trace analytical workflows, adsorption loss on vial surfaces—due to silanol sites and metal impurities—can significantly impair quantitation. This guide explains the mechanisms of adsorption, compares deactivation, silanization, PEG, and PFDCS coating methods, and highlights performance data—including recovery >90–99% for polar analytes in treated vials—helping labs choose optimal vial surface treatments for enhanced accuracy and reproducibility.

This article reviews the usage of EPA-certified 8–60 mL VOA sample vials made of high-grade Type I borosilicate glass for volatile organic compound (VOC) sampling in environmental analysis. Topics include standardized field collection protocols (such as Method 5035), proper sample preservation, transport and storage procedures, container material effects on sample stability, and regulatory compliance—all intended to ensure traceable, contamination-resistant workflows for reliable environmental monitoring.

Mass spectrometry is a powerful analytical technique with high sensitivity and specificity, playing a key role in drug development, bioanalysis, and environmental monitoring. This article explores its fundamental principles, recent technological innovations, and transformative applications, providing a comprehensive overview of mass spectrometry.

This article discusses the issue of analytical deviations caused by sealing failures in VOCs samples during testing, analyzes the limitations of traditional screw-cap vials, and proposes optimization solutions such as PTFE/silicone composite gaskets and torque-controlled cappers to enhance analytical accuracy.

20mL scintillation vials are crucial in radioactive experiments across nuclear medicine, pharmacokinetic studies, and environmental monitoring. This article outlines 8 key application scenarios, along with material comparisons and operational precautions, helping laboratories optimize safety and analytical accuracy.

COD water quality testing is an important part of environmental monitoring, and the quality of digestion colorimetric test tubes is directly related to the accu...

Digestion tubes are essential components in laboratory settings, especially in processes involving microwave digestion or block digestion systems. These tubes a...

Reusing COD test tubes will definitely have safety risks. Everyone has different operating habits, and the impact of reuse on the tube is also different. As a r...

The aperture of most digestion instrument colorimeter on the market is made into 16mm, and the tolerance of the tube glass bottle is mostly ±0.2mm, so th...

Total Recovery Vials, also known as High Recovery Vials or Micro Vials, are specially designed sample containers designed to minimize carryover and maximize sam...

High-Performance Liquid Chromatography (HPLC) is a critical analytical technique widely used in laboratories for separating, identifying, and quantifying compon...

Gas chromatography (GC) is a powerful analytical technique used extensively in laboratories to separate and analyze compounds in mixtures. One of the key compon...

Silanization is a widely used surface deactivation method, especially in glassware applications, to minimize adsorption and improve analyte recovery. The techni...

HPLC (High Performance Liquid Chromatography) and GC (Gas Chromatography) are both powerful analytical techniques used to separate, identify, and quantify compo...