Chemical

Traditionally in GPC, the sample dissolution solvent and the mobile phase are one and the same. However, a closer look at the demands of sample solvent and mobile phase suggests that this should not always be the case.

The newest addition to the popular ‘10 ways to…’ series of educational papers provides practical guidance on developing high performance suspension products with enhanced consumer appeal. ‘10 ways to...control rheology by changing particle properties’ explores how controlling particle characteristics, such as particle size distribution, concentration and zeta potential, enables formulators to engineer suspension performance. Suspensions are used in the formulation of a wide range of every day products from medicines, drinks and foodstuffs to paints, inks and coatings. This paper is therefore valuable to formulators working across a wide range of industries.

Using PTR-MS to track the chemistry of group emotion

The Morphologi G3-ID enables simultaneous physical and chemical characterization of particle samples, enabling outlier particles to be identified as being part of a product formulation or genuine foreign particle contaminants.

The ideal solvent for a material may not provide a sufficient refractive index difference for light scattering detection. This example of a biodegradable polymer shows how SELS is used to increase dn/dc to give enhanced detection sensitivity

This application note describes the use of a Zetasizer Nano ZSP to characterize the charge state of spidroins in different formulations. The earliest stages of spidroin aggregation in different formulations are then assessed using low-temperature synamic light scattering (DLS) thermal trend experiments.

In the light of a disruptive new paper, four experts discuss the future of Raman spectroscopy

In this application note, molecular weight data from the Viscotek SEC-MALS 20 is combined with measurements of Rg and IV to study the structure of different polysaccharides including pullulan, dextran, hydroxypropyl cellulose (HPC), pectin and gum Arabic. The differences between conformation and Mark-Houwink plots are also studied.

A 2015 Innovation Award-winning “fastGC” module enhances proton transfer reaction time-of-flight analyzer performance by adding an optional near real-time chemical pre-separation step. Here’s the story behind its development.

The Analytical Scientist Innovation Awards (TASIAs) return for a third consecutive year to recognize 12 months of innovation from companies big and small.