Replacement UV Lamp – Philips / Osram 39W Germicidal | UV Water Systems Oman

The UV lamp is the heart of any UV sterilizer — it is the source of the germicidal 254 nm radiation that inactivates waterborne pathogens. Not all UV lamps are equal. Generic lamps sold at low prices often do not deliver rated UV output at 254 nm, may have shorter service lives, and may not maintain stable output throughout the lamp’s life. UV Water Systems in Muscat supplies replacement UV lamps from Philips and Osram — two manufacturers whose germicidal lamps are tested and validated for 254 nm output at rated wattage, with predictable output decay curves across the 9,000-hour service life. For commercial and industrial UV sterilizers where water safety documentation is required, the use of a certified lamp from a named manufacturer is essential — generic lamps cannot provide the traceable UV output data needed for HACCP records or health authority audits in Oman.

Why Lamp Brand Matters for UV Dose Compliance

A low-pressure mercury germicidal lamp does not produce UV-C energy proportional to its rated wattage unless the lamp is correctly manufactured with the right mercury fill, electrode configuration, and glass envelope. A 39W lamp from an unverified source may produce only 15–20W of actual UV-C output at 254 nm — delivering less than half the expected dose at any given flow rate. Philips and Osram publish validated intensity data for their germicidal lamps, including output versus temperature curves and output decay over time. UV Water Systems uses this data to verify that the UV systems we install continue to deliver ≥40 mJ/cm² dose throughout the annual lamp service period, not just at commissioning.

Key Features and Benefits

Certified 254 nm germicidal output at 39W: Philips and Osram lamps deliver validated UV-C output at 254 nm — the wavelength most effective for DNA damage in bacteria and viruses — not simply electrical wattage which does not equate to UV dose.
9,000-hour service life rating: Rated for continuous 9,000 hours of operation (approximately 12 months at 24-hour daily use) with documented output decay curve — UV Water Systems uses manufacturer data to confirm that dose requirements are met throughout the full service period.
Compatible with 12 GPM and larger commercial UV chambers: The 39W lamp is the standard lamp for light commercial UV sterilizers in the 12 GPM range — the most common commercial UV size UV Water Systems installs in restaurants, clinics, and offices across Muscat.
Stock held in Muscat for immediate supply: UV Water Systems keeps Philips/Osram 39W replacement lamps in stock at Muscat — no waiting for shipping from UAE or overseas. Same-day supply and installation service available.
Annual replacement is mandatory regardless of appearance: UV lamps continue to glow visibly long after UV-C output has declined below effective levels. A lamp that appears lit may be delivering only 50–60% of its rated UV-C output — annual replacement is the only reliable way to ensure continued dose compliance.

Technical Specifications

Wattage: 39W
UV-C wavelength: 254 nm (germicidal peak)
Lamp type: Low-pressure mercury amalgam
Service life: 9,000 hours
Brand: Philips or Osram (germicidal series)
Application: 12 GPM light commercial UV sterilizers

Applications Across Oman

The 39W Philips/Osram replacement UV lamp is used in commercial UV sterilizers installed at restaurants, cafes, medical clinics, schools, and offices across Muscat and the wider Oman market. UV Water Systems schedules and carries out annual lamp replacement services with UV intensity verification testing for all commercial UV systems under maintenance contracts.

Frequently Asked Questions

How do I know when to replace the UV lamp? Replace the lamp every 12 months (9,000 hours), regardless of whether it is still illuminated. Visual output gives no indication of UV-C effectiveness. UV Water Systems offers annual maintenance contracts that include scheduled lamp replacement with intensity verification — remove the guesswork entirely with a fixed annual service.

Are Philips and Osram lamps interchangeable with my existing UV system? In most cases, yes — 39W germicidal lamps from Philips and Osram are manufactured to standard dimensions compatible with most commercial UV chamber designs. UV Water Systems can confirm compatibility with your specific UV sterilizer model before supply. Call +968 9763 7786 with your UV sterilizer model number.

UV Water Systems is an ISO 9001:2015 certified water treatment company based in Muscat, Sultanate of Oman, with 14+ years of experience. We supply, install, and service water treatment solutions for residential, commercial, and industrial clients across Oman. Call +968 9763 7786 or visit www.uvwater.biz.

UV Lamp Oman

Replacement UV Lamp Philips Osram 39W Germicidal – UV Water Systems Oman