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Model
VUV-22 Variable Wavelength UV-Vis Absorbance Monitor
$ 4,880*
The Model VUV-22 is one of the most versatile, reliable,
and sensitive ultraviolet visible absorbance monitors in the
market today.
The
Model VUV-22 uses state-of-the-art photodiode design
with complimentary high-photon throughput optics. With a variety
of sample cell designs, this detector is capable of meeting
virtually every application requirement in the laboratory.
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The VUV-22 Variable UV/Vis detector is capable of working
from 195 to 400 nm with optical range extension up to
the NIR (900 nm). The working wavelength can be selected
from the front panel by simple up/down arrows.
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The
VUV-22 offers one of the lowest noise and drift specifications
in the industry. This means extremely high signal-to-noise
ratios can be obtained with the standard 10 mm pathlength
HPLC cell. In fact, the sensitivity of the VUV-22 is substantially
beyond the normal chromatographic drift that is routinely
found in most chromatographic separations.
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The VUV-22 can be modified in the field without special
alignment tools to accommodate many different sample cells.
Access to the sample cell is at the front of the instrument,
next to the display and the keypad. Available sample cells
include HPLC, micro-HPLC, 10 mm stainless steel, preparative,
and capillary (CE).
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The
sample cells range in illuminated volumes from 0.000393
uL (capillary cell) to 18 uL (HPLC cell). Our wide
range of flow cells can accommodate practically any flow
rate or backpressure requirement.
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All
lamps for the VUV-22 are prealigned. The standard unit comes
with a high quality deuterium lamp for use from 195-400
nm. With only the deuterium lamp installed, the instrument
can be used with broad bandpass to 900 nm. All lamp changes
are easy and accessible from the front door of the unit.
Deuterium lamps are rated for 1000 hours minimum lifetime
and feature a built-in lifetime indicator for warranty
replacements in the rare event of a failure.
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universal power supply has an AC input voltage of 80 to
270 Volts at 50 or 60 Hz. A "pluggable" rear barrier strip
provides easy access to input signal closures at the rear
of the instrument for event and autozero. The high-resolution
analog output is also part of this barrier strip, and it
is suitable for interface to integrators, chart recorders,
or commonly used computer interface boards. Computer control
and acquisition can also be performed via the standard serial
interface (RS-232) on the rear panel.
Includes
ONE (1) YEAR WARRANTY.
*All
prices are in U.S. dollars and do not include shipping, handling
and installation. International
Cooperating Organizations
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| Specifications |
| Light
source |
Deuterium
(typical lifetime of > 2000 hrs.), easily changed, prealigned. |
| Optical
design |
Prism
monochromator (patented) with dual beam silicon photodiodes;
wavelength selection from 195-900 nm |
| Wavelength
selection |
195
nm to 900 nm in increments of 1 nm; user selected from
front panel via push button input, or selected from computer
via RS-232 input/output |
| Wavelength
accuracy |
<±
3 nm |
| Wavalength
precision |
<±
0.3 nm |
| Wavelength
bandpass |
<8.0
nm (typical) at half-height (at 250 nm) |
| Noise
and Drift |
<±
1 x 10-5 AU/10 mm pathlength (over 30 sec period peak
to peak, 1.0 sec rise time); <± 1 x 10-4 AU/10
mm pathlength (over 30 min period peak to peak, 1.0 sec
rise time) with standard sample cell at constant temperature |
| Input/Output
connections |
RS-232
computer I/O; autoinjection input (event or run); autozero
input; one analog integrator or chart recorder output,
(voltage range default Input/Output connections:1.0 V/AU);
selectable analog range outputs of 4.0, 2.0, 1.0, 0.5,
0.2, 0.1, 0.05, 0.02, 0.01, 0.005, 0.002, 0.001, 0.0005
AU/V with total voltage range of ±4 V at any scale |
| Displays |
Absorbance
(5 digits LED); wavelength (3 digits LED); analog output
range (momentarily from absorbance display by pressing
range switch); reference light level; sample light level |
| Sample
cell |
Standard
HPLC flow cell with 10 mm pathlength, total dead volume
of 18.0 uL (illuminated volume): other optional cells
easily fitted to front panel sample area |
| Physical |
5.5"
H x 10.4" W x 17.5" D (15 x 13 x 28 cm) Approx. 15 lbs.
(6.8 kg) |
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