Coldstream Sentry Ceramic Water Filter Cartridge

Advanced Ceramic Water Filter for Chlorine, Bacteria & Microplastics

The Coldstream Sentry CF115W ceramic water filter is designed to removes chlorine, harmful microorganisms and fine particles from town water and untreated water sources such as rainwater tanks, bores, and rivers. This highly efficient filter removes bacteria, cysts, and microplastics while maintaining fast flow rates and long service life. It is ideal for use in our standard benchtop or under sink filter housings that take 2.5″ x 9″ and 2.5″ x 10″ candles.

Independently tested and certified to NSF/ANSI Standards 42, 53 and P231, the Sentry filter provides reliable protection without chemicals or electricity — just clean, safe water you can trust.

Suitable for:

• Benchtop Water Filters
• Undersink Water Filters
• CTO Max Twin Countertop Water Filter
• Compatible with most 2.5″ x 9″ and 2.5″ x 10″ standard housings

Powerful Filtration You Can Rely On

• Removes 99.9999% of bacteria
• Reduces 99.9% of Cryptosporidium spp. oocysts (protozoan cysts)
• Filters 99.9% of Class 1 particles, including microplastics
• Ideal for untreated water (rainwater tanks, bore water, rivers)
• Only for cold water use (no electricity or chemicals required)

Tested and Certified for Performance

• NSF/ANSI 42 – Particulates (sediment, microplastics)
• NSF/ANSI 53 –  Cysts (cryptosporidium, giardia)
• NSF/ANSI P231 –  Bacteria & Viruses (E.coli, Rotavirus, etc.)

Not intended to treat raw sewage or industrial wastewater. Use only with cold water. Actual performance may vary depending on water quality.

Specifications:

– Capacity: 10,000 Litres or 6 months
– Dimensions: 2.5″ x 9″ (blue caps) and 2.5″ x 10″ (red caps)
– Micron: 0.9 absolute
– Flow rate: up to 2.5L/min
– Operating Pressure: 10-125psi
– Temperature Range: 5°C – 70°C
– Compatibility: Standard size system fits all standard filter housing 2.5″ x 9″ and 2.5″ x 10″
– Manfufacturer: KLT Filtration Ltd, UK

The Two Stages of Filtration in one Candle 

The Coldstream Sentry features a robust two-stage ceramic design:

• Outer ceramic shell with anti-bacterial properties filters out bacteria, microplastics, and cysts
• Inner structure designed for consistent flow and long life

This design ensures long-lasting microbiological protection with minimal maintenance. The cartridge can be scrubbed clean under cold running water to restore flow if it slows due to sediment build-up.