CL-Hg Wavelength Calibration Standard (250-600nm)

  • CL-Hg Mercury-lamp Calibration reference Standard 250-600nm

Selected for convenience, stability and for the range of atomic lines available, the CL-Hg lamp may either be mounted to the exit slit of any monochromator or spectroradiometer, or implemented in a free-standing configuration.

The mercury spectrum contains no useful lines above 579.07nm, however shorter wavelength lines may be used to calibrate monochromators by exploiting higher grating diffraction orders. For example, the green 546.08nm line may be used to calibrate monochromators in second (1092.16nm) or third order (1638.23nm).

Core benefits


  • Includes germicidal, low pressure mercury lamp (250-600nm) with 2000 hour expected lifetime
  • Used in free space or coupled to the entrance port of any monochromator or spectroradiometer
  • Can be used in higher diffraction order to calibrate over wider spectral range


Lamp typeGermicidal low pressure mercury lamp
Nominal lamp power and voltage75W, 220 VAC (no PSU or ballast required)
Operating current27mA
Expected lifetime500 hours
Most prominent spectral lines253.65nm, 296.73nm, 365.02nm, 404.66nm, 365.02nm, 404.66nm, 576.96nm, 579.07nm
Calibration frequencyNot applicable


Compatibility4 x M3 clearance holes in Bentham slit pattern
Dimensions216L x 67W x 67H (mm)
CL-Hg Mercury-lamp Calibration reference standard top dimensions
CL-Hg Calibration Standard - Top profile
CL-Hg Mercury-lamp Calibration reference standard front dimensions
CL-Hg Calibration Standard - Front profile
CL-Hg Mercury-lamp Calibration reference standard side dimensions
CL-Hg Calibration Standard - Side profile
CL-Hg calibration standard responsive over 250-600nm
CL-Hg typical spectral distribution

Ordering Information

CAL_CL-HGWavelength calibration standard

Atomic Line Database

The Bentham Standard

We’re with you from the first call to the final result

Call us on +44 118 975 1355 or email us