Replacement Oyster TM Cartridge Set

Improve taste and get rid of heavy metals and chemicals from your mains water. 

Cartridge details:

• Watts F109009 coconut shell carbon block filter cartridge for chlorine, taste and odour reduction in water.*
• 2.5 x 10".
• 5 micron - up to 99% chlorine removal.
• Chlorine reduction >4,000 gallons @ 1.0gpm or 12 months; whichever comes first.
• Thick wall carbon construction for superior performance.
• Outperforms granulated activated carbon (GAC) cartridges as it has superior chlorine reduction, lower pressure drop and will not channel.
• Media wrap between centre tube and carbon block to reduce carbon fibres.
• Maximum operating pressure - 125psi.
• Operating temperature - 50°F to 125°F / 10°C to 52°C.
• Tested and certified NSF/ANSI standard 42 for materials only.
• FDA grade components and materials.
• Tested and verified by independent laboratory testing.

* On some occasions a CTO 2510-05 cartridge may be used in the kit. This does the same job as the Watts F109009. They're just different brands.

If you're on mains water there WILL be chlorine or chloramine in your water.

Cartridge details:

• GAC10N/KDF-BOM cartridge which contains 0.75lbs of KDF and 0.75 litres of GAC.
• 2.5 x 10".
• Fits standard 10" housing.
• 20 micron.
• 2,500 gallons/11,365 litres cartridge lifespan, or 12 months; whichever comes first.

We send out an email every 6 months to remind you to check your filter performance.

Why do I need to change the o-ring?

You can tell if the seals start leaking, which is obvious, I know.

Even if there are no leaks you may find that the profile of the O ring becomes flattened because of prolonged time under compression. The cross section should be round and if it's not it may not seal easily.

However, I recommend that you replace the O rings every two or three years as a precautionary measure.

One of the main reasons for changing O rings periodically is that as they age and compress, the housing bowl needs to be tightened excessively. That leads to difficulty loosening the bowl from the cap next time the cartridge needs to be replaced.