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The Hamamatsu L9841 X2D2 Deuterium Lamp has a MgF2 window material with a guaranteed lifetime of 2000 hours. The brightness of new X2D2® deuterium lamp lamp is two times higher than conventional deuterium lamp (0.5 mm aperture type). This provides high resolution and high throughput in applicable instruments.


  • High Performance Liquid Chromatography,
  • UV-VIS  Spectrophotometer,
  • Capillary Electrophoresis,
  • Film Thickness Measurement,
  • Environmental  Analysis etc.


  • 0.5 mm aperture diameter,
  • 2000 hours guaranteed life,
  • Excellent temperature characteristics,
  • High resolution and high throughput of the instruments,
  • High stability; fluctuation of 0.005% (p-p) typical, (Eqv. 2 x 10^-5 A.U.)


  • High UV intensity,
  • 115 nm to 400 nm spectral distribution,



Series X2D2
Electrode Structure Standard
Window Material MgF2
Spectral Distribution (Short) 115 nm
Spectral Distribution (Long) 400 nm
Aperture Diameter 0.5 mm
Output Stability Drift Max. +/- 0.3 %/h
Output Stability Fluctuation (p-p) Typ. 0.005 %
Guaranteed Life 2000 h
Required Discharge Starting Voltage Min. 400.0 V dc
Anode Current 300 +/- 30 mA dc
Tube Drop Voltage Typ. 85.0 V dc
Filament Warm-up Voltage 2.5 +/- 0.25 V dc, V ac
Filament Warm-up Current Typ. 4 A dc, A ac
Filament Warm-up Time 20 s
Filament Operating Voltage 1.7 +/- 0.2 V dc
Filament Operating Current Typ. 3.3 A dc
Current Stock:
HAM L9841
0.25 LBS
6.00 (in)
4.00 (in)
4.00 (in)
Manufacturer's Warranty: The manufacturer warrants its products to be free of detects in materials and workmanship for the stated period from date of original purchase invoice. All warranties or merchant ability and fitness for any purpose and all other warranties, expressed or implied, except those expressly set forth herein, are deemed waived and excluded. Manufacturer's duty under the warranty is limited to replacement and/or repair of the defective part at their exclusive option. Seller shall not be liable for any expenses or damages incurred by the purchaser except as expressly set forth herein, and in no event shall seller or manufacturer be liable for any special, incidental or consequential damages of any kind. This warranty does not supersede any statutory rights that may be available in certain countries. The foregoing manufacturer's warranty of shall be voided, and of no force and effect if buyer has modified or damaged the product.

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