close
Choose Your Site
Global
Social Media
Views: 0 Author: Site Editor Publish Time: 2026-09-18 Origin: Site
CTO, short for Chlorine, Taste, and Odor, refers to the compressed activated carbon block filter cartridge, one of the most indispensable core components in modern water purification systems. As a vital third-stage filtration element in standard RO water purifiers and a key pre-filtration unit for various water treatment equipment, CTO filter cartridges are manufactured by high-pressure compression of high-quality coconut shell or coal-based activated carbon powder with food-grade adhesives. This unique integrated block structure delivers superior adsorption and filtration performance compared with traditional granular activated carbon filters, making it widely adopted in residential, commercial, and industrial water purification scenarios worldwide.
Different from loose UDF granular carbon filters, the compact and uniform structure of CTO carbon blocks features dense micropores and a large specific surface area. It combines physical interception and chemical adsorption to deeply purify tap water, effectively solving common water quality problems such as residual chlorine, peculiar smell, foreign taste, fine sediment, and volatile organic compounds (VOCs). It not only optimizes water taste and clarity but also plays a critical role in protecting downstream water treatment components.
The excellent filtration capacity of the CTO filter cartridge comes from its dual working mechanism of physical filtration and high-efficiency adsorption. First, the dense carbon block structure can physically intercept fine suspended particles, rust, sediment, and other microscopic impurities that pass through the first-stage PP cotton filter, further refining water quality. Second, the abundant microporous structure of activated carbon can strongly adsorb residual chlorine, organic pollutants, peculiar odor molecules, and harmful volatile substances in water through molecular adsorption technology.
During the water flow process, raw water fully contacts with the activated carbon block inside the cartridge in a gradient filtration manner. The multi-layer dense filtration structure ensures that water impurities are fully captured without causing rapid blockage. This stable filtration mode ensures consistent water quality output and long-term reliable operation of the water purification system.
CTO carbon block filters can eliminate up to 99% of free residual chlorine in municipal tap water, completely removing the pungent chemical taste and bleacher odor. It effectively solves the problems of bitter taste and peculiar smell in tap water, making drinking water fresh, sweet, and palatable for daily drinking, cooking, and tea making.
Residual chlorine in tap water is highly corrosive to RO membranes and UF membranes, and long-term chlorine erosion will sharply reduce the service life of precision filter membranes (even up to 90% lifespan loss). As a middle-stage filtration barrier, the CTO filter thoroughly removes residual chlorine and oxidative impurities, effectively protecting RO membranes, ultrafiltration membranes, and other precision components, reducing equipment failure rates and extending the overall service life of water purifiers.
The high-density activated carbon material can effectively adsorb and filter VOCs, organic residues, residual pesticides, and other trace harmful substances in water, improving water clarity and purity. It provides safer and healthier water for household use and meets the high-standard water purification demands of commercial and industrial scenarios.
Thanks to the high-pressure integral compression process, the CTO filter cartridge has no carbon leakage, uniform water flow, and stable filtration efficiency. Compared with ordinary granular carbon filters, it features stronger dirt holding capacity, slower attenuation of adsorption performance, and longer service life. It supports long-term stable operation while reducing frequent replacement costs.
Standard-sized CTO filter cartridges (10-inch, 20-inch, BB size) are compatible with most mainstream water purifiers, under-sink filtration systems, whole-house water filters, and commercial water treatment equipment on the market. The plug-and-play design enables tool-free quick installation and replacement, saving time and maintenance costs for users.
It is widely used in household under-sink RO water purifiers, desktop water filters, whole-house pre-filtration systems, and kitchen water purification equipment. It optimizes daily drinking and cooking water quality, bringing healthy and fresh water for families.
Suitable for hotels, restaurants, cafes, office buildings, schools, and shopping malls. It supports water dispensers, commercial direct drinking water equipment, and beverage production pre-filtration to provide stable high-quality water for public and commercial scenarios.
Serves as essential pre-filtration equipment for industrial RO systems, UF water treatment systems, electroplating water purification, electronic semiconductor process water, and food and beverage production water. It removes water impurities and residual chlorine to ensure stable operation of industrial water treatment equipment and qualified process water quality.
To ensure long-term water safety and filtration efficiency, regular replacement of the CTO filter cartridge is essential. For ordinary household use with standard tap water quality, it is recommended to replace the cartridge every 6 to 12 months. For areas with poor water quality, high water hardness, or high-frequency water use in commercial scenarios, the replacement cycle can be shortened to 4 to 6 months.
Users need to replace the filter cartridge in time if there are obvious signs such as deteriorated water taste, recurring peculiar smell, reduced water flow, or turbid water output. Timely replacement avoids secondary pollution caused by saturated adsorption and dirt accumulation of the filter cartridge.
Our CTO filter cartridges adopt food-grade high-purity coconut shell activated carbon and environmental-friendly adhesive materials, which are safe, non-toxic, and compliant with international water purification material safety standards. Adopting precision high-pressure compression technology, the product features uniform carbon density, zero carbon powder leakage, large dirt holding capacity, and stable adsorption performance. Every product undergoes strict quality testing to ensure 99% removal rate of residual chlorine and odor, delivering consistent high-efficiency water purification effects.
We provide standard and customized specifications of CTO filter cartridges, covering 10-inch, 20-inch, big blue and other mainstream sizes, fully meeting household, commercial, and industrial filtration needs. With reliable quality, cost-effective pricing, and stable supply capacity, our products have been exported to many countries and regions, winning wide recognition from global customers.
As a core intermediate filtration component, the CTO filter cartridge undertakes the key tasks of removing residual chlorine, optimizing water taste, adsorbing organic impurities, and protecting precision water treatment equipment. It is an indispensable part of building a complete high-efficiency water purification system. Choosing high-quality CTO filter cartridges can effectively improve daily water quality, protect family health, and reduce the maintenance cost of water treatment equipment. If you are looking for durable, high-efficiency, and cost-effective compressed activated carbon CTO filter cartridges, our professional water filtration products will be your ideal choice.
