Retention time ( tR
), also called the total retention time. The time between injection and the appearance of the peak maximum. The total retention volume (VR
) is determined by multiplying the retention time by the flow rate. The adjusted retention time (tR
') adjusts for the column void volume; tR
' = tR
. It usually is measured from the point of injection to the apex of the peak, but it should be measured to the center of gravity of the peak for asymmetric peaks..
The term "retention time" was found in the following pages: