Cartridges per press

The Coldstream CF108W and CF521W cartridges are specifically designed for CA653 high-capacity pressurized water filtration systems.

They are suitable for equivalent Doulton models.

They are not suitable for the Coldstream CA566 and Coldstream CA564 models.

Make sure to select only the compatible filters indicated on the product sheet. If in doubt, our customer service is at your disposal to guide you before your purchase: info@pure-filters.com

Please note:  No returns will be accepted for an unpacked or used filter. For hygiene and safety reasons, filters cannot be returned or exchanged once opened.

Model Compatibility:

• CF108W (CTO+): Designed for use with the CA653 under-sink filtration system (capacity up to 10,000 liters).
• CF521W (CTO MAX): Dedicated exclusively to the CA653 under-sink model, with an extended capacity of 10,000 litres.

Please note: some Coldstream filters are intended for professional or high-capacity systems not offered on our store. It is therefore essential to choose the filter that is compatible with your installation.

Advanced filtration technology

These cartridges are made of high-performance ceramic with an advanced combination of diatomaceous earth and activated carbon, ensuring complete filtration of chemical, organic, and microbiological contaminants.

Specific filtration performance

CF108W (CTO+):

• Enhanced filtration of chlorine, chloramines, fine particles, heavy metals such as lead, mercury, cadmium.
• High reduction of volatile organic compounds (VOCs) and pesticides.
• Good effectiveness against common pharmaceutical contaminants.

CF521W (CTO MAX):

• Maximum performance on chemical contaminants including chlorine, chloramines, nitrates, herbicides, pesticides and VOCs.
• Very high efficiency against heavy metals (lead, mercury, aluminum, cadmium, etc.)
• Superior filtration of microbiological contaminants (99.9999% bacteria, 99.99% virus).
• Advanced removal of pharmaceutical contaminants and endocrine disruptors.

Capacity and durability

• Filtration capacity: up to 10,000 liters of water.
• Recommended service life: Replace every 6 months for consistent performance.

Technical characteristics

• Operating temperature: 5°C to 35°C.
• Operating pressure: 0.5 to 6 bar.
• Average flow rate: up to 3 litres/minute depending on pressure.

Maintenance and installation

• Quick and easy installation on the CA653 under-sink system.
• Periodic cleaning recommended.
• Easy replacement without specific tools.

Benefits of Coldstream cartridges

• Complete, high-quality filtration.
• Great economic and sustainable capacity.
• Eco-friendly solution reducing the consumption of plastic bottles.
• Certified by independent testing to NSF/ANSI standards.

Recommended Applications

• Residential: CA653 under-sink systems to ensure healthy water on a daily basis.
• Commercial: offices, cafes, restaurants equipped with the CA653 model requiring reliable and safe drinking water.

Choose Coldstream CF103W (Sentry), CF108W (CTO+) or CF521W (CTO MAX) cartridges specifically tailored to the CA653 system for superior water quality and optimal user comfort.