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App Notes

Results 1221–1230 of 1444

pH measurement: Six technical tips

| Contributed by Metrohm

The pH value is one of the most important and most frequently measured quantities in analytical chemistry. However, to verify the accuracy of the measured value, the following tips should always be considered before taking a pH measurement.

Identify multiple trace components in polymer extracts with the superior mass accuracy of Pegasus® GC-HRT.

| Contributed by Leco

Overcome misleading library hits of homologous compounds by utilizing superior mass accuracy, CI and EI ionisation features of LECO Pegasus® GC-HRT technology. This high resolution TOFMS approach is ideally suited for the confident identification of unknowns in polymer extracts.

Differential Analysis of Olive Oils with Pegasus GC-HRT and ChromaTOF-HRT® Reference Feature

| Contributed by Leco

Characterization of food products, including differential analysis, is important in the food industry for quality control, brand awareness, and authentication of materials and products.

Automated NGS Library Prep: Ligation Efficiency of NxSeq® Sample Preparation Using the Gilson PIPETMAX® 268

| Contributed by Gilson

As the number of samples for sequencing increases, there is a need for library prep automation that matches the throughput of the next generation sequencing (NGS) instruments while not requiring an investment equal to the sequencer itself.

Extraction of Aflatoxins and Ochratoxin from Dried Chili Using ISOLUTE® Myco Prior to LC-MS/MS Analysis

| Contributed by Biotage

An SPE protocol for the extraction of a range of mycotoxins from dried chili using ISOLUTE® Myco with LC-MS/MS analysis, achieving high recoveries of relevant mycotoxins with %RSDs and LOQs that meet EU regulations for measurement of these analytes.

Diffusive monitoring – A cost-effective and quantitative approach to environmental monitoring

| Contributed by Markes International Ltd

Diffusive monitoring is a simple, cost-effective means of large-scale sampling for many air monitoring programs. This poster discusses the background to diffusive sampling, and provides examples of the application of tube-type samplers in real-life applications.

Improved Recoveries and Lower Background for the Analysis of PAHs in Olive Oil

| Contributed by Supelco

Current extraction and cleanup techniques for fatty samples are time-consuming, expensive, and provide insufficient background removal prior to analysis. For this reason, a new approach was developed.

Detailed hydrocarbon analysis (DHA) using ASTM method D6729 and D6729 appendix X2.

| Contributed by Peak Scientific

This application note demonstrates a comparison of gasoline analysis using helium carrier gas following ASTM method D67291 and the use of unfiltered hydrogen carrier gas produced by a Peak Scientific Precision Trace hydrogen generator in DHA following ASTM method D6729 appendix X22.

Fast Analysis of IgG Charge Heterogeneity by Ion Exchange Chromatography

| Contributed by Tosoh

Evaluation of strong and weak cation exchange columns and dependance of seperation on mobile phase ph

mAb aggregate detection – Analytical HIC as an Orthogonal Chromatographic Approach

| Contributed by Tosoh

During the last decades, mAbs have proofed to be a very valuable medication for severe illnesses like auto immune diseases and cancer.

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