Stages 1, 2 & 3 + UV Bulb for Sterisil G4 Water Treatment system. This annual kit is changed 365 days from the date of installation and includes Stages 1, 2, 3, and the UV bulb. The Filter Monitor on the system, when properly programmed, tracks the remaining lifespan for stages 1-3, Stage 5, and the UV light.
*Dispose of cartridges into regular trash.
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The lifespan of G4 cartridges is determined by the incoming source water quality and the volume of water used. Most locations can expect Stages 1, 2 and 3 to last approximately one year. The Stage 4 cartridges may last between 4 to 12 months depending on water quality and usage.
The life of the Sterisil System™ filters and UV light is one year under normal use treating tap water with moderate hardness. If tap water has over 170 ppm TDS hardness or high volume of deionized (DI) water is produced for autoclaves, the DI cartridges may need to be replaced more frequently than once a year. The Sterisil System™ is equipped with automated monitoring to provide notification of this condition.
The main water valve does not need to be shut off. All Cartridges are fitted with an automated shut off valve. Simply unscrew the filters, remove and replace with the new filters.
The main water valve does not need to be closed when changing filters. Each filter connects to a valve head with an automatic shut-off valve that cuts off water flow once the cartridge has been removed.
Our Certified Water Specialists provide live, real-time customer support, and our staff education and training make water quality and safety as easy as possible for your entire dental practice.
Toll-free: 1 (800) 216-5505
Hours: 8:30 AM – 7:00 PM (EST)
Call: (877) 207-1551
Fax: (508) 393-1795

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