OSRAM PURITEC HNS 25 W G13 (G25T8) UV-C germicidal lamp – 253.7 nm

€19.90

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OSRAM PURITEC HNS UV-C germicidal lamp, 25 W, G13 base (G25T8), 253.7 nm ozone-free radiation. Disinfects air, water and surfaces.

G1325 W253,7 nmUV-CG25T8436 mm

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Description
Product Details

The OSRAM PURITEC HNS UV-C lamp rated 25 W emits germicidal radiation at 253.7 nm, the wavelength that neutralises the DNA of bacteria, viruses, moulds and algae. Its special glass blocks the 185 nm line: it disinfects without producing ozone.

It fits a G13 base and runs on a standard fluorescent ballast of the same wattage — a direct replacement in your steriliser, purifier or clarifier, with the unit powered off. Check the tube length: 436 mm.

Direct cross-references — ANSI code G25T8 (identical across all makers): OSRAM PURITEC HNS 25 W — this product, PHILIPS TUV TL-D 25W, SYLVANIA Germicidal G25W T8 (G25T8), GE Lighting G25T8 (réf. 11082). These germicidal ranges are interchangeable: same base, dimensions and output.

Technical specifications

Brand	OSRAM
Type	UV-C germicidal lamp (disinfection)
Base	G13
Power	25 W
Wavelength	253,7 nm (UV-C)
Tube length	436 mm
Ozone	Ozone-free (185 nm blocking glass)
ANSI code	G25T8
Runs on ballast	Standard fluorescent ballast of same wattage
Useful life	≈9000 h
OSRAM equivalent	PURITEC HNS 25 W — this product
PHILIPS equivalent	TUV TL-D 25W
SYLVANIA equivalent	Germicidal G25W T8 (G25T8)
GE Lighting equivalent	G25T8 (réf. 11082)

Key benefits

✓253.7 nm germicidal radiation — neutralises bacteria, viruses and moulds

✓Ozone-free: special glass blocks the 185 nm line

✓Runs on a standard fluorescent ballast of the same wattage

✓Interchangeable with OSRAM, PHILIPS, SYLVANIA and GE (G25T8)

Ideal for

Air purifiers and HVAC ductsUV clarifiers for aquariums and pondsWater treatment (drinking water, wells)Laboratories and food industryDisinfection cabinets and devices

Frequently asked questions

Can I handle the lamp with bare hands?

No: always handle it with a clean soft cloth (or the packaging film). Fingerprints leave grease on the quartz that blocks UV-C radiation and creates hot spots — germicidal efficacy and lamp life drop sharply. If you have touched it, clean it with alcohol before use.

Is UV-C radiation dangerous?

Yes: UV-C burns eyes and skin within seconds. Use this lamp ONLY inside a closed device (steriliser, clarifier, duct) and never look at the lit tube. Always switch off the power before any intervention.

When should it be replaced?

After about 9000 hours (≈1 year of continuous use). UV-C output fades over time: the lamp may still glow blue while its germicidal power has become insufficient. Replace it yearly to guarantee disinfection.

Which OSRAM, PHILIPS, SYLVANIA or GE references does it replace?

OSRAM PURITEC HNS 25 W — this product, PHILIPS TUV TL-D 25W, SYLVANIA Germicidal G25W T8 (G25T8) and GE Lighting G25T8 (réf. 11082) (shared ANSI code G25T8): identical G13 base and dimensions, direct replacement in the same device.