AssayIndex
Chromatography

Column dead time (t₀)

The time taken for an unretained species to traverse the column. Everything eluting at t₀ is unseparated.

Related terms

Void volume
The volume of mobile phase within the column. Determines the dead time. A void marker injection calibrates the retention axis and is cheap and rarely done.

Where this term appears

The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.