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This is a sintered activated carbon rod filter, Ф60*240 mm, made from high-iodine coconut shell carbon and food-grade ion exchange resin. It filters chlorine, odours, colour, and heavy metals such as lead and mercury from drinking water, while the resin helps soften the water and reduce scaling. It is built for household reverse osmosis systems, water dispensers, refrigerators with built-in water filters, and commercial coffee machines. The brand is Ranveth.
The performance of this carbon rod comes from how two media are paired in a single sintered structure. High-iodine coconut shell activated carbon provides a large internal surface area for adsorbing residual chlorine, taste, odour, and organic compounds. Food-grade ion exchange resin is distributed within the carbon matrix to soften water and capture heavy metal ions. The sintering process bonds the carbon particles into a rigid block with a uniform microporous structure, so the rod acts as both an adsorbent and a mechanical filter. This pairing means water passes through a graded pore network where contact time is consistent, initial flow is high, and the block does not release black fines.
Because the media are combined at the forming stage, the ratio of carbon to resin and the density of the block can be adjusted to balance three outcomes: adsorption efficiency, pressure drop, and service life. A denser block increases contact time and adsorption capacity but raises resistance; a more open structure favours flow but may shorten the interval between replacements. Ranveth tunes this balance according to the device and water quality, so the rod delivers stable filtration without forcing the system pump to work harder than necessary.
| Item | Detail |
|---|---|
| Product name | Carbon Block Water Filter / CTO Filter for water purifiers and refrigerators |
| Core filtration media | High-iodine coconut shell activated carbon + food-grade ion exchange resin |
| Core performance | Softens water and reduces scaling; strongly adsorbs residual chlorine (bleaching powder); removes off-colour and off-odour; intercepts harmful heavy metals such as lead and mercury |
| Precision and service life | Uniform microporous structure, high initial flow, high filtration precision, no black fines; large saturated adsorption capacity, long service life |
| Standard size reference (outer diameter × length, mm) | Ф60×130 / Ф62×240 / Ф37.5×75 / Ф38×57 / Ф40×195 / Ф51×127 / Ф32×126 / Ф32×106 |
| Main end applications | Household reverse osmosis systems (pre-CTA/CTO or post-T33), direct drinking water dispensers, side-by-side refrigerators with built-in water filters, commercial coffee machines |
| Customisation service | Full OEM/ODM support. Length, diameter, and inner/outer diameter ratios can be tooled to match device requirements; end-cap welding customisation available. |
| Quality certification | Production base of 20,000 m² certified to ISO 9001 and IATF 16949. Filter media meet strict drinking water safety and hygiene standards, with quality control backed by a national-level CNAS testing centre. |
The Ф60*240 carbon rod is commonly specified as a pre-filter or post-filter in household reverse osmosis systems, where it protects the membrane from chlorine and organic fouling or polishes the final taste. It is also used in direct drinking water dispensers, side-by-side refrigerators with built-in water filters, and commercial coffee machines where consistent water quality affects both taste and machine life. Because the rod combines softening resin with carbon, it suits water sources with moderate hardness and noticeable chlorine or odour. The same construction is available in other diameters and lengths for different housings.
To quote a custom carbon rod, we need the device or vehicle model, or a drawing showing the required outer diameter, length, and any end-cap or connection details. Please also tell us the expected water flow rate, the operating pressure and temperature, and the water quality parameters such as chlorine level and hardness. If you have a target service life or replacement interval, include that as well. Finally, let us know your estimated annual quantity and packaging requirements. Our engineers will confirm the media ratio, density, and tooling needed, then provide a sample and quotation.
Ranveth operates a production base of 50,000 m² in Zhongshan, Guangdong, China, including six cleanrooms totalling 20,000 m². The quality management system is certified to IATF 16949 (obtained in 2024) and ISO 9001, ISO 14001, and ISO 9001, ISO 14001, and ISO 45001. Products comply with REACH and RoHS, and compliance documents are available. Our in-house laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment) and can issue test reports covering filtration efficiency, dust holding capacity, and resistance, so media choices are backed by measured data. With more than 20 years of filtration research and manufacturing experience, we have developed over 1,000 filtration solutions and continue to export to Europe, the United States, Japan, and South Korea. Multiple automated production lines support a monthly capacity of several million pieces, and quality control follows IQC, IPQC, and OQC at every stage.
To discuss a sample or quotation, please contact our team. Share the device or vehicle model, required size or drawing, water flow rate, operating conditions, and estimated quantity. We will respond with a recommended specification and next steps.
It uses high-iodine coconut shell activated carbon paired with food-grade ion exchange resin, sintered into a single rod. The carbon adsorbs chlorine, odours, and organics, while the resin softens water and captures heavy metals such as lead and mercury.
The sintered structure creates a uniform microporous network that gives consistent contact time and high initial flow without releasing black fines. The balance between carbon and resin can be adjusted to optimise adsorption capacity, pressure drop, and service life for your specific water conditions.
Yes, we support full OEM/ODM customisation. We can tool for different lengths, diameters, and inner/outer diameter ratios, and we offer end-cap welding to match your housing. Standard sizes range from Ф32×106 mm up to Ф62×240 mm, and other dimensions are available on request.
Please provide the device or vehicle model, a drawing or required size, the water flow rate, operating conditions (pressure, temperature, water quality), and your estimated quantity. With these details we can recommend the right media ratio and provide a sample and quotation.
For the standard Ф60*240 size, the MOQ is typically 1,000–2,000 pieces. Custom sizes may have different MOQs depending on tooling and complexity, which we will confirm during the quotation.
Standard stock items usually ship within 7–15 days. Custom OEM orders generally take 25–35 days, including mould confirmation and sample approval. Our production capacity in Zhongshan supports large volumes and seasonal demand.
Under normal operating conditions, the service life is typically 6–12 months, depending on water quality and daily throughput. A pressure drop or noticeable taste change may indicate it is time to replace the filter.
Our in-house laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity, and resistance. The production base is certified to IATF 16949 and ISO 9001, ISO 14001, and ISO 45001, and products comply with REACH and RoHS. For a quotation or sample, please <a href="/en/contact">contact us</a>.