Electronic Ballast Guaranteed to Work with GPH330T5VH/4 UV Bulb - Direct Replacement Lamp 1126 Experts recommend that the UV

Experts recommend that the UV light bulb must be replaced annually for efficiency as the light bulb may continue to emit UV light even after a year but may not be effective in destroying waterborne microorganisms

Agfa Anapurna MW UV Lamp - Drawing (PDF)

These systems provide excellent consistency in terms of output

pH or taste of water in the process and is a much better option to chemicals and their bi-products

Electronic Ballast Guaranteed to Work with GPH330T5VH/4 UV Bulb - Direct Replacement Lamp 1126 Experts recommend that the UVUV 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