https://www.purewaterproducts.com/docs/pura-lamp-troubleshooting

A summary of considerations if the lamp on a Pura ultraviolet water purifier doesn't light.

Pura Lamp Doesn't Light? If you replace your UV lamp and the new lamp doesn’t come on, here are some things to consider: Give the lamp time. UV lamps are like fluorescent bulbs. If the unit was working normally before you replaced the lamp, the best test you can do is put the old If neither lamp lights, it's likely that the power supply needs to be replaced.

https://www.purewaterproducts.com/docs/service-pura-lamp

Instructions for replacing the lamp on a Pura UV20 ultraviolet water purifier.

Changing the Pura UV20 Series Ultraviolet Lamp Unscrew the four screws attaching the UV control module to the mounting bracket. Remove UV control module by gently lifting the module and the lamp straight up from the mounting bracket Firmly grasp the UV lamp by the white end piece and disconnect from the four pin connector. Replace lamp and gently lower back into the quartz sleeve.

https://www.purewaterproducts.com/products/uv944

Replacement Quartz Sleeve for VIQUA E4 (and UV Max E4) VIQUA E4 - Owner’s Manual (pdf)

https://www.purewaterproducts.com/products/uv963

Replacement Lamp for VIQUA S8Q-PA and VIQUA Sterilight SSM-37 VIQUA SQ Series - Owner’s Manual (pdf) Sterilight UV - Silver Series (pdf)

https://www.purewaterproducts.com/products/uv911

VIQUA S2Q-PA Ultraviolet Unit, 3 GPM VIQUA SQ Series - Owner’s Manual (pdf)

https://www.purewaterproducts.com/articles/ultraviolet-and-cysts

A quotation on the effectiveness of ultraviolet in the treatment of cysts, from Dr. Kelly A. Reynolds, an University of Arizona Research Scientist.

UV (Ultraviolet treatment) & Cysts Is Ultraviolet Irradiation an Effective Treatment for Waterborne Giardia and Cryptosporidum? Ultraviolet light irradiation (UV) can effectively inactivate these hard to kill protozoa, without producing Ultraviolet and Pond Treatment

https://www.purewaterproducts.com/products/uv701

UV Lamp Housing Assembly for Pura UV20 (92504) Includes UV lamp housing cap, sump, and o-ring.

https://www.purewaterproducts.com/pura-uv/uvbb

Replacement Lamp Ultraviolet lamp only. 15 gallon per minute capacity. Ultraviolet lamp with a 5-micron sediment filter. 15 gallon per minute capacity. Ultraviolet lamp with a 5-micron sediment filter and a carbon block filter. 15 gallon per minute capacity Pura UV Support & Help

https://www.purewaterproducts.com/products/uv699

UV Lamp Housing Assembly for Pura UVB (92502) Includes UV lamp housing cap, sump and o-ring.

https://www.purewaterproducts.com/products/uv982

Quartz Sleeve for VIQUA S5Q-PA VIQUA SQ Series - Owner’s Manual (pdf)

https://www.purewaterproducts.com/viqua-uv

VIQUA Ultraviolet changing a light bulb in your home. Quick lamp replacement with no disruption of water flow. Quick lamp replacement with no disruption of water flow. VIQUA S2Q-PA Ultraviolet Unit, 3 GPM

https://www.purewaterproducts.com/pura-uv/addon

Pura Addon Series Ultraviolet Units Standalone Ultraviolet Ultraviolet lamp only. One gallon per minute capacity. Ultraviolet lamp only. Three gallons per minute capacity. Pura UV Support & Help

https://www.purewaterproducts.com/articles/ultraviolet-energy-levels

A table detailing ultraviolet energy levels required for 99.9% destruction of microorganisms.

Ultraviolet Energy Levels Required for 99.9% Destruction of Microorganisms Pura UV Systems provide greater than 16,000 microwatts of UV energy; VIQUA systems provide 30,000. Ultraviolet and Pond Treatment

https://www.purewaterproducts.com/products/uv810

UV Lamp for 2 GPM Watts Units

https://www.purewaterproducts.com/products/uv811

UV Lamp for 6 GPM Watts Units