DAD 6.1L/DAD 2.1L/MWD 2.1L user manual V6700, version 3.2
8
Intended Use
Flow Cell
Various types of flow cells are available to the user and allow a variety of
applications. Flow cell cartridges with KNAUER PressureProof and KNAUER
LightGuide technology are available (see “Flow Cells” on page 52).
KNAUER LightGuide
Flow Cell Cartridges
KNAUER LightGuide flow cell cartridges combine a maximum light trans-
mission (using total reflection) with a minimum cell volume to offer an ideal
signal-to-noise ration.
KNAUER PressureProof
Flow Cell Cartridges
The KNAUER PressureProof flow cell cartridges are optimized for conven-
tional and high flow HPLC and FPLC applications. These flow cells feature an
increased pressure stability (up to 300 bar) and extended flow rate range
(up to 20 and 50 ml/min).
KNAUER Fiber Optics
Technology
Adapters for fiber optics are optionally available. Fiber optics allow separat-
ing the flow cell from the detector. This way, working with dangerous,
explosive, or toxic materials becomes safer. Remote flow cells are recom-
mended for preparative applications (high flow rates), in order to protect
sensitive optical components from potential leakages.
Data Rate
The detector measures with a maximum data rate of 100 Hz. During the
measurement, approx. 100 spectra per second are recorded.
Leak Management
Integrated leak management drains liquids from leaks.
GLP Data
The Mobile Control, the Control Unit and the different software products
(ClarityChrom
®
or OpenLAB
®
) can be used to display or read GLP data like
operating hours, lamp operating hours, number of lamp ignitions, etc. You
find a detailed description on how to display or read out GLP data in the
respective user manuals.
Upgrade MWD 2.1L
The multiwavelength detector can be upgraded to a diode array detector.
Optional Accessories
The following optional accessories are available:
Mobile Control
Control Unit
Eluents
Even small quantities of other substances, such as additives, modifiers, or
salts can influence the durability of the materials.
Note:
The list of selected solvents was compiled based on research in the
pertinent literature and is only a recommendation by KNAUER. If there is
any doubt, contact the Technical Support of the manufacturer.
Suitable Eluents
acetate buffer solutions
acetone at 4–25 °C (39.2–77.0 °F)
1
acetonitrile
2
benzene
chloroform
ethyl acetate
ethanol
formiate buffer solution
isopropanol
carbon dioxide (liquid 99.999 % CO
2
)
methanol
phosphate buffer solutions (0.5 M)
toluol
ammoniated dilute solution
acetic acid (0.1–1 %), at 25 °C
1. valid for the specified temperature range
2. not recommended in combination with PEEK small parts and PEEK capillaries
