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The LED Authority

Philips 36W TUV 4 Pin 2G11 Germicidal Long Single Twin Tube CFL Bulb

SKU: 265850 | Ordering Code: TUV PL-L 36W/4P (Germicidal)  | UPC: 8711500628787

$20.99 per Bulb
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Product Highlights

  • Estimated life of 8.2 years based on 3 hours use per day

Philips Sterilamp® brand TUV PL-L twin tube germicidal fluorescent lamp. 36 Watts with 2G11 4-Pin Base for use in germicidal sterilization applications

  • Produces UVC radiation to kill microscopic organisms.  CAUTION: can be very harmful to eyes and skin.  DO NOT expose eyes or unprotected skin to these lamps.  SERIOUS injury and blindness could result.
  • TUV PL-L lamps are compact UVC (germicidal) lamps used in professional water and air disinfection units.
  • The compact size of the lamp allows for a small system design and design flexibility.
  • TUV PL-L lamps offer almost constant UV output over their complete lifetime, for maximum security of disinfection and high system efficacy.
  • Thanks to the single ended lamp base, lamp replacement is easy.
  • Compatible Ballast - IUV-2S36-M2-LD-35M. (Please always confirm compatibility with original equipment manufacturer.)

Full Specs


Philips Lighting

Product Line


Model Number


Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
36 Watts


The end (or ends) of the lamp that fits into the socket.

Bulb Shape

The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".
Bulb Shape
Single Twin Tube

Bulb Finish

The surface finish of a bulb, which may affect the quality of the light emitted.
Bulb Finish

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED
Bulb Technology

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Average Rated Life (hr)

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Length (in)

Contains Mercury (Hg)

Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
Contains Mercury (Hg)


A General Electric brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.
Customers Also Viewed
Customer Reviews

Bad bulbs


These bulbs failed after about a week of use ... as noted by the red flashing lights from the electronic control panel. I put in the "old" bulbs and the electronic control panel showed green led ... meaning the bulbs were good. These are germicidal light bulbs. Normally, these bulbs have worked great in the past 10 years or so. These bulbs were made in 2015. The last set of bulbs I rcv'd from showed the bulbs were manufactured in 2016. These bulbs were either used or the shelf life was roughly 2 years which was too long or these were just bad bulbs.



I boughtbefore and bought again enough said


Uv for air handler



Great product will purchase again


Lamp on 24/7 in air handler


Fort pierce, fl


Great product for a GREAT price!


UV bulb on furnace / air unit


Louisville, KY


"I would buy this product again and agai


The light is used in my Air Condition System .


Dallas, Tx


I am pleased with my bulb.


I am pleased with the result of tis bulb and your cmpany. The first one that came did not work, and with a simple phone call you sent me another one at no cost. This one works great. This is good business and the kind of company I enjoy doing business with. Thank you for your great service. Phillip Lamoureux (satisfied customer)


Orange Park, Fl.


good product[...]


We have been buying products from these folks for a long time. We like the web site, the value [...]


Leawood Kansas

Save a ton with this little trick


Honeywell tries to extort $$$$ out of you by customizing this bulb so you can only buy it from them. They do this by buying Philips bulbs exactly like this and milling (cutting) two small slots out of the plastic base of the bulb. Since the original Philips bulb from does not have these slots, it won't fit. You're either stuck buying the Honeywell bulb for 3x's price or do this. Take the Honeywell bulb holder out and look inside. See those two small tabs? Their the money-makers for Honeywell. Take a sharp matt knife or exacto knife and cut them off. Voila! Mark which side of the bulb goes where before inserting.






We have priced these bulb at our local stores and they are well over $100.00 each! We use it in our outdoor fishpond and the bulb must be changed every 12 months! So this has been the MOST cost effective way to comply with the manufacturer!


Chesterfield, VA


Philips 36W TUV 4 Pin 2G11 Germicidal Long Single Twin Tube CFL Bulb

4.4 9


Q & A
Do you know what ballast and socket this bulb takes.


The base of the bulb is a 2G11 so a socket that takes that type of base and has the proper wattage rating will work. In regards to the ballast, ballast manufacturer's recommend that this type of bulb be used with a ballast that will also operate an F54T5/HO bulb. We do offer a couple of those on our website and can be found using the following link.

Product Support