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Straight tubular UV-C germicidal lamp, clear glass finish

Ushio

Ushio G8T5 7.2 W germicidal standard bulb 8000 h

SKU CH-ARFT-XWVMP

A 7.2 W low-pressure mercury-arc germicidal lamp emitting UV-C at 253.7 nm with an 8000-hour rated life and 20-25 % output depreciation

  • TypeGermicidal Bulbs
  • Wattage7.2
  • Life Time Hours8000
  • UV-C output peaks at 253.7 nm for effective germicidal action
  • 2 W low-pressure mercury arc lamp delivers reliable disinfection
  • Rated 8000 hours life reduces replacement frequency
  • Special coating maintains high UV output over the full lifetime
  • Low mercury dose meets environmental requirements

Germicidal UV-C Bulb for Disinfection Systems

The Ushio G8T5 is a 7.2 W low-pressure mercury-arc lamp that emits UV-C radiation peaking at 253.7 nm for germicidal applications. It is built for water treatment, air handling, food processing and laboratory sterilisation equipment. The lamp uses a specially formulated coating to maintain high output over its rated 8000 hour life. Low mercury content supports environmental compliance requirements.

Replaces Aging UV-C Lamps in Existing Fixtures

Install this bulb when an existing G8T5 germicidal lamp reaches end of life or when output has depreciated beyond the 20 to 25 per cent average loss threshold. The jump is worth it when disinfection performance drops below validation standards for drinking water, wastewater or clean room protocols. High purity construction stabilises UV output to minimise depreciation across the service interval. Flexible design capability allows integration into custom lamp developments.

Suits Facilities Running Continuous Sterilisation

This lamp suits operators of HVAC, pharmaceutical, packaging and photochemistry systems that require consistent 253.7 nm irradiance. Buyers needing higher wattage or different base configurations for larger reactors should look at other models. The 7.2 W rating limits use to fixtures designed for this specific power envelope. Users without UV-C safety interlocks or proper shielding must not install this lamp.

Highlights

  • UV-C output peaks at 253.7 nm for effective germicidal action
  • 2 W low-pressure mercury arc lamp delivers reliable disinfection
  • Rated 8000 hours life reduces replacement frequency
  • Special coating maintains high UV output over the full lifetime
  • Low mercury dose meets environmental requirements

Specifications

BrandUshio
TypeGermicidal Bulbs
Wattage7.2
Life Time Hours8000

Questions about this item

Does the G8T5 need a G5 bi-pin base socket?

The G8T5 is a low-pressure mercury-arc lamp with a G5 bi-pin base, so it requires a matching G5 socket and a ballast rated for 7.2 W operation.

What is the common mistake when installing this UV-C lamp?

Installers often power the lamp without a compatible ballast or skip the protective housing, which exposes people to 253.7 nm UV-C radiation.

When should the lamp be replaced?

Replace the lamp after 8000 hours of use, when UV output has depreciated by an average of 20 to 25 percent from its initial level.

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