I’ve heard from some readers who have asked about creating columns in a Microsoft Word document. Well, there are four basic types of columns that I refer to as “Book,” “Newspaper,” “Table” and “Tabbed ...

Chromatography is an analytical technique that is used to separate and analyze complex mixtures. Chromatography works by distributing the components of a mixture between two phases, known as the ...

Case in point: For more than a century, chromatography practitioners have been separating the components of chemical mixtures by using columns packed with various types of particulate matter. Recently ...