What is the industry standard for the service life of medium-pressure UV disinfector lamps?

I. Chinese National Standards

• GB 28235-2020 Hygienic Requirements for Ultraviolet Disinfectors (mandatory)

  Medium-pressure UV lamps: ≥ 5,000 hours

• GB/T 19837-2019 Ultraviolet Disinfection Equipment for Urban Water Supply and Drainage (recommended)

  Medium-pressure UV lamps: ≥ 5,000 hours

II. International Industry General Standards

• Mainstream in Europe and the US: Effective life: 4,000–9,000 hours

• Common warranty practice: 5,000 hours warranty

  High-end models can reach 8,000–9,000 hours.

III. Actual Service Life Range in the Market

• Standard domestic lamps: 3,000–5,000 hours

• Premium domestic / imported lamps: 5,000–8,000 hours

• High-end / special application lamps: 8,000–9,000 hours