Sylvania GCF11DS/G23/SE/OF 11W Germicidal UV Fluorescent Lamp
Sylvania GCF11DS/G23/SE/OF 11W Germicidal UV Fluorescent Lamp, Replacement Light Bulb

*Osram $5.95 Each

*Box of 10 $49.50

Germicidal Lamp Handling Warning

*2,785 Remaining In Stock

Lamps ordered will generally be shipped the next business day by USPS Priority Mail or UPS, check here for Shipping Information. Large orders may qualify for a discount and may not qualify for next day shipment. If you do not know what lamp you require or for lamps not listed, email your request or call 336-882-2854. To order, please use our secure shopping cart or call 336-882-2852 or 800-692-3051. Click to go to our Home Page and View Cart.

Wattage: 11W, 11 Watt Watts
Glass: Duo-Tube, T-5, T5 Clear, UV Transmitting Glass
Base: G23 BiPin
UV Emission: 254nm
Overall Length: 9.3", 9.3 Inches, 236mm
Average Rated Life: 8,000 Hours

Lamp emits UV rays of 254nm and can kill most germs and microorganisms. Emits no ozone.

Alternate Part Numbers: Philips 285650, 28565-0, PLS11W/TUV, PL-S 11/TUV, FLS/11W, GBX11/UVC, GPX11, GLS/11W, GCF11DS/G23/SE/OF, HNS-S-11W, Osram Puritec, 23377-0, 23377, 23398, Light Tech Light Sources LTC11W/G23, Sankyo Denki GPX11, Ushio 3000322, GE 15879, GBX11/UVC, PUVH2311, Victory 11PL/TUV, PLS112P-TUV, 11PLS2PINTUV

Germicidal lamps are clear with special UV transmitting glass. For use in sterilizers and air and water purifiers. This is an ultraviolet C (253.7 nm wavelength) bulb for use in sterilization, water and air purification and surface disinfection. Used in the Forming and Disinfection of Contact Lenses. Used in UV Sterilizers for Fish Aquariums, Water Gardens, Fountains and Ponds. Fixed wavelength spectrophotometer detector. Germicidal lamps allow 253.7nm UV-C radiation from the mercury discharge to pass through the glass thus penetrating and inactivating the DNA of most micro-organisms.

Warning: Avoid direct exposure of eyes and skin under germicidal lamps. To prevent possible serious injury, eyes and skin should not be exposed to direct or reflected ultraviolet power emitted by this lamp. This lamp is in Risk Group 3 per ANSI/IESNA RP-27.3-96. Adequate protection should be provided by clothing, gloves, opaque materials, and ordinary window glass. Although this lamp will operate in standard fluorescent fixtures, it should not be used for general lighting applications.

Go to our Germicidal Safety Sheet for more lamp handling details.

Note: This lamp contains Mercury. Manage in accord with disposal laws. See

Aquael Unimax 700
Jebo 11W TUV, UV-H11-Older Units
Odyssea UV
Tetra 11W Fish Pond UV Filters

Cross reference information is designed to help you find the correct lamp for your application. We do not verify the accuracy of this information. You are responsible for ordering the correct lamp and we make every attempt to help you in that process. We recommend that you confirm the information with the equipment manufacturer before ordering.
800 Burton Avenue, Suite 107
High Point, NC 27262
336-882-BULB (2852)

Order Line: 800-692-3051
Technical Support Line: 336-882-2854
Fax Line: 336-882-2819

Hours: 8 AM to 4 PM EST Monday through Friday

Sales: Address changes, invoice copies, tracking and delivery confirmation numbers, order status, product availability, payment options, shipping quotes, returns, damage claims

Technical Support: Help finding a product not listed, determining the correct lamp for your application, lamp handling and premature lamp failures

International Orders: Large international orders that require special shipping arrangements and quotes

If you have compliments, complaints, suggestions, or help with areas not listed above please contact:

Ron Miller
General Manager