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UV Bulbs

Common Questions

Purely UV Replacement Bulbs

Common Questions

We’ve gathered the most commonly asked questions about our UV Bulbs in one place. If your question isn’t answered here, feel free to contact us.

UV Bulb Questions

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UV Bulb Questions


Does the age of my UV bulb affect its effectiveness?
Yes! Your germicidal ultraviolet bulb’s effectiveness will decrease with age and hours used.
How often should I replace my UV bulb?

At least once a year or to ensure maximum effectiveness every six months. Purely UV™ lamps are guaranteed for 8,000 hours under normal operation. However, your lamps effectiveness will be influenced by the machine it is operating in and the environment surrounding the lamp’s use.

  • Due to a frequent switching ON/OFF of the germicidal UV lamps, the service life of UV lamps is greatly diminished. This is caused by a surge of an electrical current that wears out the elements in the UV lamp(s).
  • Always follow your UV device manufacturer's safety and handling instructions. When new lamps are installed they should be clean.
    • My UV bulb doesn’t seem to be putting maximum or even light?
    Special care should be taken not to touch the glass part of the lamps with your fingers as this can deposit oils on the glass, which can create a dead space on the lamp’s surface and also shorten the life of the germicidal UV lamp.