TL 40W/12 RS SLV/25 UVB Broadband TL - Philips Lighting Bulb TU409/11 The lamp bulb is 100%

The lamp bulb is 100% compatible with dichroic quartz plate specifically to the VTI UV systems

and will perform the same as the OEM lamp which costs much more

The 22 Watt germicidal water treatment bulb is compatible for use with the following Aqua Treatment Service UV-C system models:

orgWedeco DLR1 Germicidal UV-C Bulb - Water Purifier Lamp

People are also of the opinion that it is necessary to change the UV light bulb every year for better efficiency

TL 40W/12 RS SLV/25 UVB Broadband TL - Philips Lighting Bulb TU409/11 The lamp bulb is 100%Philips Lighting (UVB) Bulb Medium Bi pin (2 Pin), Double Ends G13 Base 39 Watts Worry Free Performance for 1 Year The Philips TL 40W 12 RS UVB Broadband TL bulb is engineered for specialized applications requiring reliable UVB radiation within the 290315 nm bandwidth. This lamp is commonly used in phototherapy, agricultural processes, and industrial curing applications. Its broadband UVB output supports effective treatment and exposure where precise