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AZURA® VWD 2.1L Variable Wavelength Detector, flow cell version

AZURA® VWD 2.1L Variable Wavelength Detector, flow cell version

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with Test Cell, without Flow Cell, 190-900 nm

The AZURA VWD 2.1L is a versatile variable wavelength detector designed to adapt seamlessly to your needs.

In combination with a classic KNAUER flow cell, it supports analytical HPLC by detecting up to four compound-specific wavelengths across 190–900 nm at data rates of up to 5 Hz (for four UV channels) or 100 Hz (for one channel).

When equipped with KNAUER’s patented CombiLight flow cell, the VWD 2.1L goes even further—simultaneously monitoring conductivity and eluent temperature alongside up to four UV/VIS channels. To complete FPLC systems, a pH glass electrode can be connected for real-time pH monitoring.

Thanks to its flexible design, the VWD 2.1L can be easily converted between flow cell and fiber-optics version. One detector, multiple possibilities - stay flexible and ready for any project that comes your way.

  • Detector Type
  • Detector Type
  • Detector Type
  • Detection Channels
  • Wavelength Range
  • Spectral Bandwidth
  • Wavelength Accuracy
  • Wavelength Precision
  • Light Source
  • Baseline Noise Level (Test Cell, 254 nm, ASTM E1657-98)
  • Drift (254 nm, ASTM E1657-98)
  • Linearity (274 nm, ASTM E1657-98)
  • Max. Data Rate
  • Max. Data Rate
  • Time Constants
  • Integration Time
  • Wavelength Verification
  • Leak Sensor
  • Leak Sensor
  • Flow Cell
  • GLP Report
  • GLP Report
  • GLP Report
  • GLP Report
  • Maintenance
  • Display
  • Conductivity Range
  • Conductivity Accuracy
  • pH Measurement Range
  • pH Measurement Accuracy
  • Temperature Range
  • Temperature Accuracy

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Internal Reference: ADB71

Technical Data

General
Detector Type Variable multi-wavelength detector, Conductivity monitor, pH Monitor
Detection Channels 4x UV/VIS, 1x Conductivity, 1x Temperature, 1x pH
Wavelength Range 190-900 nm
Light Source High brightness deuterium (D₂) lamp and halogen lamp with integrated GLP chip
Flow Cell Not included
Display Mobile Control (optional)
Conductivity Range 0.1-1000 mS/cm
pH Measurement Range 0-14
Specifications
Wavelength Accuracy ± 1.5 nm (verification with integrated holmium oxide filter)
Wavelength Precision 0.4 nm (ASTM E275-93)
Conductivity Accuracy ± 2 % or ± 0.5 mS/cm (whatever is greater)
pH Measurement Accuracy ± 0.1 (pH 2-12)
Temperature Range 1-99 °C
Temperature Accuracy ± 1.5 °C (4-40 °C)
Features
Wavelength Verification Internal holmium filter
Leak Sensor Yes, Adjustable sensitivity
GLP Report Lamp recognition, Operating hours, Light source operating hours, Flow cell recognition
Maintenance Frontally accessible deuterium and halogen lamp, as well as flow cell
Specification - Detection
Spectral Bandwidth 6 nm at Hα line (FWHM)
Baseline Noise Level (Test Cell, 254 nm, ASTM E1657-98) ± 7.5 µAU
Drift (254 nm, ASTM E1657-98) 200 µAU/h
Linearity (274 nm, ASTM E1657-98) > 2.5 AU
Max. Data Rate 100 Hz (LAN, 1 UV/VIS channel), 5 Hz (LAN, 4 UV/VIS channels with Dl=100 nm)
Time Constants 0.01 / 0.02 / 0.05 / 0.1 / 0.2 / 0.5 / 1.0 / 2.0 / 5.0 / 10.0 s
Integration Time Automatic
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