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Electron Microscopy Sciences

Technical Data Sheets

Hi-Intensity UV Lamps

EMS Catalog #72414-72415

Safety Instructions

For your own safety, please read carefully before operating. Observe all safety precautions listed below. If further details are needed regarding safe operation of this device, please contact your organization's environmental health & safety department.
The symbol at left is used to indicate safety hazards related to ultraviolet (UV) exposure.
Note: This unit is designed for safety, function and reliability. The unit may include a powerful source of UV radiation that will cause damage to unprotected eyes and skin.


  • The device must on!y be operated if all protective equipment is present, and the system is properly installed and fully functional.
  • Disconnect the power supply before servicing the system.
  • Protect eyes and skin from damaging UV radiation by using protective equipment and face shields while operating.
  • Before operating any unit, ensure all personnel in the area are properly protected and that instructions for use of this equipment are followed.
  • Warning: UV tubes contain mercury. Dispose according to local environmental regulations.

General Information for Ultraviolet Inspection

Make tests in a darkened area for best contrast. Fluorescence may be bright or dim, depending on amount of fluorescing agent present. Be careful to distinguish fluorescence from blue light reflection on polished metal surfaces.


Turn on/off switch on transformer base to ON position for starting. Although a cool lamp starts immediately, allow about five minutes to reach full brilliance. When use is intermittent, it is preferable to leave the lamp burning. This assures longer bulb life and avoids delay in restarting. Restarting does not take place immediately as the mercury vapor within the bulb must cool. Delay is typically 4 to 8 minutes. Any interruption in the power supply, such as an excessive drop in voltage, will extinguish the arc. Restarting typically will be delayed while the mercury vapor cools. Full voltage must be restored to permit the arc to strike.

While mounted on the transformer base, the lamp housing can rotate a full 360°. For handheld use, detach the lamp housing from the transformer base.


Before attempting a bulb replacement or standardization, ensure the following:

  • Wear hand and eye protection if filter glass is cracked. Replace filter as soon as possible.
  • Unplug lamp before servicing t in order toavoid electrical shock hazard.
  • Bulb runs very hot; allow unit to fully cool before servicing.
  • If bulb breaks, wear gloves to remove as bulb contains mercury. Dispose according to local regulations.
  • Lamp housings become hot during operation and care should be taken not to touch them. Lamp handles do not heat even after several hours of use.

Bulb Replacement

To replace the bulb, first remove the filter assembly: Expand front bezel tabs and slide front bezel off the lamp assembly. Expand the two silver filter assembly spring clips outward to release filter assembly from the lamp body.

When replacing the bulb, screw bulb in tightly to prevent loosening from heat expansion and contraction during lamp operation.

Bulb Standardization

For testing uniformity, a standard bulb intensity is required.

  • A special light meter calibrated for measuring ultraviolet intensity is required to check bulb standardization.
  • An ordinary light meter will not deliver readings of ultraviolet energy.

Online Ordering

Hi-Intensity UV Lamps, 115V and 220V