App Notes

11/20/2019 | Contributed by Ace

When working with Hydrophilic Interaction Liquid Chromatography (HILIC), the choice of sample diluent can have a profound impact on peak shape.

11/20/2019 | Contributed by VWR

When samples contain ionisable compounds, mobile phase pH can be one of the most important variables in the control of retention in a...

11/20/2019 | Contributed by Ace

To obtain reproducible retention times in liquid chromatography, it is essential that the column is equilibrated with mobile phase to a steady state.

11/19/2019 | Contributed by Shimadzu

Gel permeation chromatography (GPC) is used to measure the molecular weight distribution of polymers by size exclusion.

11/19/2019 | Contributed by Pall

This Technical Guide can be used for reviewing filtration requirements and performance criteria with new lab personnel.

11/19/2019 | Contributed by VWR

One result is only part of a big picture, but every link in a procedure is important.

11/18/2019 | Contributed by VWR

In many industries, ‘control’ is essential in production and analysis. One of the most common methods used is reversed-phase HPLC or UHPLC.

11/11/2019 | Contributed by Thermo Fisher Scientific

Commentary and practical tips for mastering compound purification easily and effectively.

11/08/2019 | Contributed by Restek

Currently, methods that allow the desired combined analysis of ultrashort-chain PFAS with alternative and legacy PFAS are very rare.

11/08/2019 | Contributed by Restek

From airplane and runway deicing to hydraulic fracturing operations, glycols are common chemicals used in industry