Knauer Azura DAD 2.1L Benutzerhandbuch Seite 64

65 HPLC Glossary
Term
Gradient
Ground
HPLC
isocratic
KNAUER
LightGuide
Luer-Lock
cannula
Mobile
Control
Mobile
phase
Packing
material
Peak
pH
pH elec-
trode
Preparative
Response
time
Retention
time
KNAUER DAD 6.1L, DAD 2.1L, MWD 2.1L User Manual V6700, Version 1.0
Definition
Time-dependent composition of solvent
(mobile phase) on low-pressure or high-pres-
sure side of system
Protective measure for electro-conductive
housing parts
High Pressure Liquid Chromatography (HPLC)
Mode of sample separation where the compo-
sition of a solvent remains constant
KNAUER LightGuide flow cell cartridges com-
bine a maximum light transmission (using total
reflection) with a minimum cell volume to offer
an ideal signal-to-noise ratio.
A standardized connector between syringes
and cannulas
Mobile application to control and program the
whole HPLC system via wireless LAN.
Flowing agent that transports the substances
to be separated or isolated through the column
(solvent).
Solid particles which carry the stationary phase
(carrier material).
The deflection of a detector for an analyte in a
chromatogram.
Measure for the acidic or alkaline character of
an aqueous solution.
pH sensor
Isolating the maximum amount of a substance
in a short amount of time in a required purity.
The time required, after a stepwise change in
the composition in the detector cell, for the
output signal to reach a predetermined per-
centage (67%) of the new equilibration value.
For example, if the time constant is 1 s, it will
take 1 s to attain 67% if the value of the new
signal.
The time required from injection of a substance
until the maximum concentration of a sub-
stance becomes visible.