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Waters 2489 UV/Visible Detector

Waters 2489 UV/Visible Detector
Waters 2489 UV/Visible Detector
Waters 2489 UV/Visible Detector

Whether performing routine UV-based applications or pushing the limits of detection with low-level impurity analyses, the Waters 2489 UV/Visible (UV/Vis) Detector is the best detection choice for performance, reliability, and usability. The 2489 UV/Vis Detector is the most sensitive and versatile dual-wavelength absorbance detector available for HPLC. The design combines a high energy Deuterium source, a precise optical design, and low noise, high speed electronics.  These advanced capabilities take UV/Vis detection performance to a new level.


  • Enhanced sensitivity via patented TaperSlit™ flow cell, which channels light through the cell for better energy throughput while minimizing RI effects
  • Low noise performance (<5 µAU)
  • Lamp optimization for the best s/n performance over the lifetime of a Deuterium lamp
  • Flexible sampling rates, from 1 to 80 Hz, for normal and fast LC separations
  • Independent optimization of sampling rates and filter time constants gives you the ability to tune your detector to your separation goals
  • Enhanced thermal wander management reduces baseline wander due to fluctuations caused by ambient conditions
  • Flow cell options to match your separation scale and type
  • Accessible detector components for easy operation and maintenance

Waters 2489 UV/Vis detector



Wavelength range

190 to 700 nm


<5 nm

Wavelength accuracy

+1.0 nm

Wavelength repeatability

+0.1 nm

Single λ dry noise

<5 µAU
(at 230 nm, 1 –second digital filter, 30-second segments, 10-Hz data rate, analytical cell)

Wet noise

<8 µAU
(at 230 nm, 1-second digital filter 30-second segments, 10-Hz data rate, analytical cell)

Dual channel noise (dry)

<35 µAU
(measured at 230 nm, running at 230 to 280 nm with 2-second filter at 1-Hz data rate; dry, analytical cell)

Dual channel noise (wet)

<45 µAU
(measured at 230 nm, running at 230 to 280 nm with 2-second filter at 1-Hz data rate; 1 ml/min, flow of acetonitrile, analytical cell)


<5% at 2.5 AU, propylparaben at 257 nm


1.0 x 10-4 AU/hr. max (∆T = +2°C/hr.)

Thermal drift

1.0 x 10-4 AU/°C max (∆T = +2°C/hr.)

Sensitivity setting range

0.0001 to 4.0000 AUFS

Filter setting range

Single-wavelength: 0.1 to 5.0 seconds
Dual-wavelength: 1 to 50 seconds


To 5.0-second Hamming filter

Digital data rates

1,2,5,10,20,40,80 Hz (single channel)
1,2 Hz (dual channel)

Analog output data rates (single λ mode)

10,20,40,80 Hz (channel A)
10 Hz only (channel B)

Lamp source

30-W High Brightness Deuterium lamp, 0.5 nm aperture, pre-aligned 2000 silicon photodiodes (matched pair)

Second-order filter

Automatic for wavelengths > 370 nm

Wavelength calibration filter

Erbium filter, used at startup or on demand

Flow cell

TaperSlit flow cell design

Nitrogen purge

Purge fitting present on optics bench

Path length

10 mm (standard analytical)

Cell volume

10 µL (standard analytical)

Pressure limit

6895 kPa (69 bar,1000 psi)


316 stainless steel, fused silica, Tygon

Operating temperature

4 to 40 °C (39 to 104 °F)

Operating humidity

20% to <95%, noncondensing

Shipping and storage

-30 to +60 °C

Shipping and storage humidity

0% to <95% noncondensing

This refurbished Waters 2489 UV/Visible Detector is in great condition. It has been tested at SpectraLab Scientific.

A 90 day warranty is included.

We are professionals. We encourage you to contact us to speak with one of our expert and professional team. Thanks for looking and we look forward to hearing from you!

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