Application Notes: General

This article will discuss several aspects of working with high purity water in LC-MS analyses including quality and handling. Solutions will be proposed for optimal water purification based on the use of complementary purification technologies combined with application-specific final filtering, and finally, the importance of water purification system maintenance will be discussed.

This article will discuss several aspects of working with high purity water in LC-MS analyses including quality and handling. Solutions will be proposed for optimal water purification based on the use of complementary purification technologies combined with application-specific final filtering, and finally, the importance of water purification system maintenance will be discussed.

In this application note the USP monograph method for naproxen sodium tablets was modernized and Analytical Method Greenness Scoring (AMGS) values were assigned to each system used. The use of newer technology including sub-2 µm columns provides not only improvements to throughput and solvent usage but also drastically improved AMGS values.

This application note demonstrates the use of the Agilent 1260 Infinity II Hybrid Multisampler for the analysis of per- and polyfluorinated alkyl substances (PFAS). The Hybrid Multisampler in feed injection mode was used with optimized Feed Speed for the sample injection to trap and enrich the compounds on the column. This avoided peak broadening and breakthrough of the early-eluting polar PFAS compounds. The less polar PFAS compounds can be enriched for more sensitive quantification.

Due to their ability to tackle targets that were considered “undruggable”, oligonucleotides represent a key cornerstone of the future of personalized medicine. This infographic presents the different types of therapeutic oligonucleotides and highlights some innovative solutions for their analysis.

The US EPA has released interim health advisory limits (HALs) of 4 and 20 pg/L in drinking water for the PFAS perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), respectively. This application note addresses PFAS testing at these challenging new levels in aqueous samples using optimized solid-phase sample extraction and LC/MS/MS analysis with an Agilent 1290 Infinity II liquid chromatography (LC) system coupled to an Agilent 6495C triple quadrupole (TQ) mass spectrometer.

Explore how an integrated, single platform imaged capillary isoelectric focusing (icIEF)-UV/MS workflow with the Intabio ZT system aims to tackle the challenge of charge heterogeneity profiling with a disruptive strategy that allows for separation, quantitation, and identification of individual charge variants to be achieved in minutes on a single platform.

Due to their ability to tackle targets that were considered undruggable, oligonucleotides represent a key cornerstone of the future of personalized medicine. This infographic presents the different types of therapeutic oligonucleotides and highlights some innovative solutions for their analysis.

Bioassay techniques are pivotal in quantifying and characterizing the effects of substances on biological systems. Utilized extensively in biotherapeutics, diagnostics, and environmental sciences, these assays range from ELISA for protein and antibody detection to flow cytometry for cell health analysis. Bio-layer interferometry and cell-based assays further elucidate drug-receptor interactions.

Sartorius provides an extensive selection of lab essentials tailored for the initial stages of sample handling and preanalytical processes in quality assurance labs, catering to diverse characterization requirements. Our lineup includes accurate lab scales, high-purity water purification systems, superior filtering equipment, and comfortable pipettes and tips