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Waters SemiPrep 490E Programmable Multiwavelength Detector

Waters SemiPrep 490E Programmable Multiwavelength Detector
Waters SemiPrep 490E Programmable Multiwavelength Detector



Wavelength Range

190-600 nm in 1 nm increments. No lamp change required

Wavelength Accuracy

+ 2 nm

Wavelength Repeatability

+0.05 nm

Spectral Bandwidth

4 nm


5 x 10-5 AU (peak-to-peak dry  cell) at 230 nm and a1 second time constant


2.5x 10-4 AU/hr with ambient temperature change 1°C.hr

Attenuation Range

0.001 to 2.0 UFS

Linear Dynamic Range

8.7 x 103 at 214 nm; 1.2x 104 at 254 nm (ASTM E685)

Time Constants

0.1 to 99 sec

Scan Rate

Up to 10 increments/sec; increments variable from 1 to 50 nm

Wavelength Switching Time

0.1 sec

Wavelength programming

8 wavelength changes/channel

Attenuation Programming

8 changes/channel

Event Outputs


Event Programming

On, off, pulse, repetitive pulse

Event inputs


External power supply

 12 V at 0.5 A

Auto zero

Activated by wavelength change, event input, time program or front panel

Analog Outputs

4 independent channels

Refractive Index correction




Path length

10 mm


316ss, Teflon, Suprasil

Cell pressure limit

1000 psig

Light source

Xenon stobe lamp

This Waters SemiPrep 490E Programmable Multiwavelength Detector is in great condition. 
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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