Upchurch: Glossary of Terms
This glossary of terms has been compiled for your convenience. To view the terms and their descriptions, click a letter from the list below.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
L
Linear Velocity
Related to the speed at which fluid — and thus sample components — moves along a flow path, typically reported as cm/min or mm/sec. The linear velocity calculation allows adaptation of methods when changing from one column diameter to another, as it is vitally important to keep the linear velocity the same as column diameters are changed.
Liquid-Solid Chromatography
An HPLC method, different from REVERSED-PHASE LC, in which mobile phases that do not include water are used. See also ADSORPTION CHROMATOGRAPHY.
LiteTouch®
An innovative, high pressure fitting with a reusable polymer ferrule. LiteTouch is a Registered Trademark of Upchurch Scientific. [see graphic]
Loop
A piece of tubing connected to a sample injector that holds the volume of sample to be introduced into the flow path. When used in full-injection mode, the loop establishes the analyzed volume.
Low Pressure Mixing
A pumping procedure that mixes two or more solvents before the pump to form a MOBILE PHASE and then delivers the mixture to the LC system. Often just a single pump is used, or a single pump plus a controller.