Separation Science

High Temperature GPC Analysis of a Polypropylene Copolymer

Tosoh Bioscience has produced an application note determining the molar mass averages and polydispersity of two polypropylene random copolymer samples via refractive index (RI) detection using the EcoSEC High Temperature GPC System and TSKgel...

Trends and Applications in GPC Polymer Analysis

Gel permeation chromatography (GPC) is a valuable and well established tool for the chemical industry when it comes to the determination of the molecular weight and the molecular weight distribution of polymers.

Analysis of Polymers for Therapeutics

Tosoh Bioscience has produced an application note demonstrating how GPC was applied to analyse and differentiate the molar mass averages and distributions of four block copolymers intended to be used in a polymer-based therapeutic.

Supercritical Fluid Chromatography with Flexible Injection Volumes at Highest Precision

Agilent Technologies has produced a Technical Overview demonstrating the injection principle used in the Agilent 1260 Infinity II SFC Multisampler. In this instrument, the sample volume is drawn under atmospheric pressure conditions, pressurized...

Universal Analytical Method Development for Various HPLC Systems

Agilent Technologies has produced an application note describing a combined approach to analytical method development and method transfer by direct emulation of different target HPLC systems. The proposed workflow presents a general approach to...

Quantification of Compounds in the E7 Liquid Crystal Mixture by Supercritical Fluid Chromatography with UV Detection

Agilent Technologies has produced an application note demonstrating the capability of the Agilent 1260 Infinity Analytical SFC system to perform quantitative analysis of liquid crystal compounds. It demonstrates that fast separation of commercial...

Overview of Comprehensive Two‑dimensional Gas Chromatography

SepSolve Analytical has produced a technical note providing a short overview of the theory and practice of the rapidly-developing field of two-dimensional gas chromatography (GC×GC). Included in the discussion are a summary of the detectors used,...