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App Notes

Results 11–20 of 780

Bio-Inert Coatings and Liquid Chromatography

| Contributed by SilcoTek

A bio-inert flow path is required to manage the complex and reactive sample profiles that are common in today’s fast-paced analytical world.

Simultaneous Extraction of Aldosterone and Angiotensin I and II from Human Plasma Using EVOLUTE® EXPRESS ABN Prior to LC/MS Analysis

| Contributed by Biotage

This application note describes the simultaneous extraction of aldosterone and angiotensin from human plasma using the EVOLUTE® EXPRESS ABN Solid Phase Extraction plates prior to LC-MS/MS analysis.

Routine proteome analysis using 50 cm μPAC™ columns

| Contributed by Pharma Fluidics

The practice of bottom-up proteomics relies to a large extent on the separation performance that can be achieved with state-of-the art nano LC-MS/MS equipment.

Determining petrochemical composition by GC×GC–TOF MS/FID: Reliable, automated group-type analysis

| Contributed by SepSolve Analytical

Characterising petrochemicals by assigning individual analytes to structurally-related groups in a GC×GC workflow has great potential to improve the speed with which petrochemical compositions can be assessed.

Analysis of Lactose in ‘Lactose-free’ Labelled Products

| Contributed by Antec Scientific

Lactose-intolerance is a wide-spread condition, which prevents a large number of people of consuming dairy products. To check the lactose contents in ‘lactose-free’ labelled products a fast, sensitive and selective analytical method is required.

Determination of the Molar Mass Distribution of Phenol-Formaldehyde Resins Using GPC

| Contributed by Tosoh

Phenol formaldehyde resins (PFRs) are condensation polymers and are obtained by condensing phenol with formaldehyde in the presence of an acidic or alkaline catalyst.

Simple and Rapid Detection of Thermal Degradation Products of Cooking Oils Using a Benchtop MALDI-TOF Mass Spectrometer

| Contributed by Shimadzu

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometers (MALDI-TOF MS) feature simple and rapid detection of low molecular to high molecular weight compounds in a wide range of samples.

Practical UHPLC with ACE® 1.7 μm Phases

| Contributed by Ace

Easily convert your HPLC method using the FREE ACE Translator Tool

Reproducibility with Pyrolysis-GC-MS and Thermally Assisted Hydrolysis and Methylation

| Contributed by CDS

Reproducibility of thermal techniques is addressed using the latest version of the Pyroprobe from CDS Analytical.

Gradient Method Transfer – Aspirin and Related Substances

| Contributed by Ace

In this application we look at the importance of correcting for change in dwell volume between different systems when transferring a method.

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