Articles
Green Chromatography (Part 3): Sample Preparation Techniques
Pat Sandra, Christophe Devos, Bart Tienpont, Gerd Vanhoenacker and Frank David
The final installment of Pat Sandra’s series on green chromatography takes a look at developments in "green" sample preparation techniques.
The Preparative Use of Flow Field-Flow Fractionation
Angelika Juliane Freitag, Katharina Wittman, Gerhard Winter, Julia Myschik
A novel preparative approach to separate aggregates for a protein formulation is described.
Columns
LC TROUBLESHOOTING
Solvent Selectivity in Reversed Phase LC Separations (3): Column-type Selectivity
John Dolan
How to choose another column to try and solve a separation problem.
GC CONNECTIONS Gas Switching Valves
John Hinshaw
This is the first part of a series reviewing and discussing classical gas switching valves and applications that range from simple sampling loops to more complex multidimensional GC systems. QUESTIONS OF QUALITY
Is GMP Annex 11 Europe’s Answer to 21 CFR 11?
Bob McDowall
The impact of this recent EU regulation on chromatographers working in GMP laboratories.
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