Replacement Cartridge for Pearl-H Water Filter

This is the replacement water filter cartridge for our Pearl-H hard water filter.

This cartridge will improve the taste and odour of your water, remove chlorine and sediments and reduce the hardness.

We recommend that the Pearl H water filter cartridge is used if you live in a slightly hard to moderately hard water area. If you live in an area with hard to agressively hard water then please take a look at our OneFlow range of water filter cartridges. Please do send us a message on our contact us page or call us on 01352 838 281 if you need any advice about the best solution for your hard water.

Hard water is measured in parts per million (PPM) and how many particles of hardness are dissolved in the water per million particles.

Here's a category of water hardness. But, we always recommend checking with your water supplier. Their websites will give a more accurate hard water measurement. 

• 0-50 PPM - Soft water
• 51-100 PPM - Moderately soft water
• 101-150 PPM - Slightly hard water
• 151-200 PPM - Moderately hard water
• 201-275 PPM - Hard water
• 276-350 PPM - Very hard water
• 350 + PPM - Agressively hard water

Our Pearl hard water filter cartridge effectively prevents scale and rust build up in your household appliances such as kettles, coffee machines, taps, electric showers, water heaters and many other types of cold water processing equipment.

Cartridge details:

• Watts F109009 coconut shell carbon block filter cartridge for chlorine, taste and odour reduction in water.*
• Approximately 100ml of siliphos crystals for hardness reduction.
• The size of the cartridge is 2.5 x 10". Fits all standard 10" water filter housings.
• 5 micron - >90% chlorine removal (tested and verified by independent laboratory testing.
• Chlorine reduction >37,854 litres / 10,000 US gallons @ 1.0gpm or 12 months; whichever comes first.
• 100% thick wall coconut shell carbon 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 - 250psig/17.25 bar.
• Maximum operating temperature - 125°F / 51.67°C.
• Maximum differential pressure - 100 psid / 6.895 bar.
• Collapse pressure - 200 psid / 13.79 bar.
• Tested and certified NSF/ANSI standard 42 for material safety requirements only.
• FDA grade components and materials.

*On rare occasions a different brand may be sent if we're having supply issues with Watts. This does the same job as the Watts F109009. They're just different brands.

We send you 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.