Big Blue Water Filter Set - 20 inch (50 + CTO + 5 + 55W UV)

The Big Blue Water Filter Set - 20 inch will fit on all 20 Inch Big Blue filters. Filters need replacement after use of 3 months or more, depending on water quality and amount of water purified. Regular filter replacement is therefore highly recommended. The bulb should be replaced every 12 months.

The package consists of the following: 

1 x 50 Micron polypropylene sediment filter (Removal of sediment, silt, rust and lose particles) - Stage 1 filter replacement

1 x High Quality Activated Carbon Block filter - Stage 2 filter replacement

1 x 5 Micron polypropylene sediment  polishing filter - Stage 3 filter replacement

1 x 55 watt UV sterilizer bulb

The UVT5-455 is a high-performance 55 Watt UV-C replacement bulb designed to fit inside the quartz sleeve of open-ended stainless steel UV sterilizer housings. This 4-pin lamp delivers powerful disinfection by emitting germicidal light at a wavelength of 254nm.

Product Features

• Wattage: 55 Watts

• Type: 4-Pin UV-C Replacement Bulb

• Length: 910mm

• Wavelength: 254nm (germicidal UV)

• Compatibility: Designed for open-ended stainless steel UV housings

• Application: Fits into the quartz sleeve of 55W UV sterilization chambers

How Does Ultra Violet Light Work?

UV rays can destroy 99.99% of harmful micro-organisms without adding chemicals or changing your water's taste or odour. Ultraviolet light (UV) is a natural part of the sunlight and is widely accepted as a reliable, efficient and environmentally friendly solution for water disinfection. The UV lamp utilizes the application of a particularly efficient UV radiator with a 254nm wavelength to cause immediate death to organisms and eliminate their ability to survive and reproduce.

The water is exposed to UV radiation in a specially designed chamber that provides intimate contact of the water with the UV light source. Bacteria and other living organisms absorb the energy, which destroys or inactivates their DNA, thus preventing them from reproducing. Similarly, chemicals and organic compounds also absorb the energy and are broken down into smaller, more harmless molecules.

The effectiveness of UV light depends on several factors:

• The length of time a micro-organism is exposed to UV

• Power fluctuations that affect the UV source and EM wavelength

• The presence of particles that shield organisms from UV

• The resilience of certain organisms during UV exposure

It is highly recommended to filter the water before it passes through the UV chamber to remove all loose particles and ensure optimal UV penetration. It is also critical to ensure the UV light used matches or exceeds the system's maximum flow capacity.

Other items you may be interested in:

• 55W UV Sterilizer (910mm in length)
• 55W UV Glass Sleeve (Spare) 940mm in length
• 55W UV Ballast (Spare)