Electronic Ballast Guaranteed to Work with Ultra Dynamics - 9410 UD UV Light Bulb for Germicidal Water Treatment UVC9037 This replacement germicidal bulb has

This replacement germicidal bulb has a medium bipin (2 pin) base on both ends that is used for air purification

UVA Intensity: at 1 inch from Light - 1250 mw/cm2

The Neptune WTA 05-0293-R Replacement UVC Light Bulb has a four pin on a single end and a ceramic base

Our Aqua Treatment Service ATS4-739 Replacement UVC Light Bulb has a total length of 29

Electronic Ballast Guaranteed to Work with Ultra Dynamics - 9410 UD UV Light Bulb for Germicidal Water Treatment UVC9037 This replacement germicidal bulb hasUV ballast guaranteed to work with your UV germicidal system Features: Guaranteed to work with your UV Germicidal Bulb. Comes complete with wiring diagram necessary to run your bulb(s) Industry leading 5 YEAR WARRANTY UL Listed Ballasts can be complicated. Nobody replaces ballasts regularly. Inevitably, ballasts are needed when you go to change out the UV bulb at your machine's recommended intervals when you realize that the new bulb is not lighting