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Straight T5 quartz germicidal lamp, clear finish

Ushio

Ushio G64T5L 65 W germicidal T5 quartz lamp 9000 h

SKU CH-G9F2-EHGHE

Emits 253.7 nm UV-C radiation for water, air and surface disinfection with a 9000-hour rated life

  • TypeGermicidal Bulbs
  • Wattage65
  • Life Time Hours9000
  • Peaks at 253.7 nm for effective UV-C germicidal action
  • 65 W low-pressure mercury arc with specially formulated coating
  • Rated 9 000 hours with only 20-25 % output depreciation
  • Low mercury dose meets environmental requirements
  • Suits water, air, food and laboratory sterilisation systems

Ushio 65 W UV-C germicidal lamp

The Ushio G64T5L is a low-pressure mercury-arc T5 quartz lamp rated at 65 watts. It emits UV-C radiation peaking at 253.7 nm for sterilisation and disinfection purposes. The lamp is designed for integration into water treatment, air handling, and surface sanitisation systems. Its quartz construction supports stable output over the rated service life.

Suits facilities needing 253.7 nm UV-C output

This lamp fits drinking water, wastewater, HVAC, pharmaceutical, food processing, packaging, laboratory, clean room, and photochemistry applications. It is not intended for general illumination or visible-light tasks. Buyers requiring a different wavelength, higher wattage, or non-mercury technology should consider alternative sources. The low mercury dose meets specific environmental requirements for these uses.

9 000 hour rated life with 20-25 % depreciation

The lamp delivers full rated output for disinfection cycles across its 9 000 hour lifetime. Average depreciation reaches 20 to 25 percent at end of life, after which UV-C intensity falls below effective sterilisation levels. The specially formulated coating helps maintain high output over the duration. Systems should schedule replacement before this depreciation threshold affects treatment performance.

Highlights

  • Peaks at 253.7 nm for effective UV-C germicidal action
  • 65 W low-pressure mercury arc with specially formulated coating
  • Rated 9 000 hours with only 20-25 % output depreciation
  • Low mercury dose meets environmental requirements
  • Suits water, air, food and laboratory sterilisation systems

Specifications

BrandUshio
TypeGermicidal Bulbs
Wattage65
Life Time Hours9000

Questions about this item

What ballast and socket does this 65 W T5 quartz lamp require to operate?

It requires a ballast rated for 65 W and a socket that matches the T5 bi-pin base.

Will the UV-C output at 253.7 nm remain effective if I keep my existing water-treatment reactor?

The lamp averages 20 to 25 percent depreciation at end of life, so output stays stable for most of the 9000 hour rating.

How can I verify the lamp is emitting UV-C at 253.7 nm after installation?

Use a calibrated UV-C radiometer set to the 253.7 nm peak to confirm irradiance matches the expected level for a 65 W mercury-arc source.

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