Dionex UltiMate 3000 VWD-3400 Variable Wavelength Detector

Multiple wavelength UV/VIS detector

Temperature control for both lamps

The tungsten lamp is recommended for wavelengths > 600 nm.

<± 3.5 μAU (typical <± 2,5 μAU):

dry analytical flow cell, wavelength: 254 nm, time constant (according to ASTM): 1 second, only deuterium lamp turned on

<± 5 μAU (typical):

wet analytical flow cell, wavelength: 254 nm, time constant (according to ASTM): 1 second, only deuterium lamp turned on, flowing HPLC grade methanol at 1.0 mL/min

<± 5 μAU (typical):

dry analytical flow cell, wavelength: 520 nm, time constant (according to ASTM): 1 second, only tungsten lamp turned on <± 7.5 μAU (typical): wet analytical flow cell, wavelength: 520 nm, time constant (according to ASTM): 1 second, only tungsten lamp turned on, flowing HPLC grade methanol at 1.0 mL/min

All values reached within 60 minutes of warm-up (typical).

Multiple wavelength:

<± 25 μAU (typical: <± 10 μAU):

dry analytical flow cell, wavelengths: 254 nm and 280 nm, time constant: 2 seconds, data rate: 2 Hz, only deuterium lamp turned on

<± 30 μAU (typical: <± 10 μAU):

dry analytical flow cell, wavelengths: 450 nm and 520 nm, time constant: 2 seconds, data rate: 2 Hz, only tungsten lamp turned on

<± 50 μAU (typical: <± 10 μAU):

wet analytical flow cell, wavelengths: 450 nm and 520 nm, time constant: 2 seconds, data rate: 2 Hz, only tungsten lamp turned on, flowing HPLC grade methanol at 1.0 mL/min

All values reached within 60 minutes of warm-up (typical).

dry analytical flow cell, wavelength: 254 nm, only deuterium lamp turned on, constant ambient conditions (temperature, humidity)

Typical < 1 x 10-4 AU/hour:

dry analytical flow cell, wavelength: 520 nm, only tungsten lamp turned on, constant ambient conditions (temperature, humidity)

Typicial < 2 x 10-4 AU/hour after 60 minutes warm-up

<5% at 2.5 AU cobalt, wavelength: 520 nm (correlation coefficient > 99.95%, <3% RSD up to 2.5AU)

Adjustable, up to 100 Hz (VWD-3400) or 10 Hz (VWD-3100)

Multiple wavelengths:

Adjustable, up to max. 5 Hz, depending on the number of wavelengths (2-4) and the distance between the wavelengths (in nm)

Path length: 10 mm; cell volume: 11 μL;

pressure limit: 120 bar (stainless steel), 50 bar (PEEK)

Optional flow cells for nano, cap, micro, and semipreparative HPLC

Identification of flow cell type and serial number via built-in ID chip

3 LEDs (Power, Connected, Status) for status monitoring

Full support of automatic equipment qualification (AutoQ) and system performance monitoring.

All system parameters are logged in the Audit Trail.