This Ф38×57 sintered activated carbon rod is a coconut-shell carbon block with built-in ion-exchange resin, used as a CTO or post-carbon stage in reverse-osmosis purifiers, refrigerators and coffee machines. It reduces chlorine, odours, colour and heavy metals while softening water, and is made by Zanxis. It suits OEM buyers and water-treatment engineers who need documented performance and repeatable batches.
| Item | Detail |
|---|---|
| Product name | Carbon block water filter / CTO filter for purifiers and refrigerators |
| Core filtration media | High-iodine coconut-shell activated carbon plus food-grade ion-exchange resin |
| Core performance | Softens water and limits scale; adsorbs chlorine (bleaching powder) and odours; reduces colour; intercepts harmful heavy metals such as lead and mercury |
| Precision and service life | Uniform microporous structure, high initial flow, high filtration precision, no black-powder release; large saturation capacity and long service life |
| Common 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 RO purifier (pre- or post-carbon), direct drinking machines, side-by-side refrigerator water filters, commercial coffee machines |
| Customisation | Full OEM/ODM support; length, diameter and inner/outer diameter ratios can be tooled to the device; end-cap welding available |
| Quality systems | ISO 9001 and IATF 16949; filtration media meet drinking-water safety and hygiene standards; CNAS-accredited testing centre |
Because a carbon rod is specified by the device it fits and the water it treats, these values should be confirmed in writing before release:
For the Ф38×57 rod the stated service life is about 3,000–6,000 litres or 6–12 months, whichever comes first; both ends of that range depend on actual water quality and usage.
We recommend a short, documented validation before volume orders:
Typical batch-to-batch performance deviation is held within ±5% under the IATF 16949 process controls.
The rod is sintered from high-iodine coconut-shell activated carbon and a food-grade binder, with ion-exchange resin distributed through the matrix. Sintering produces a uniform pore structure that gives high initial flow, high filtration precision and no black-powder release, while the carbon's large saturation capacity supports a long service life. The resin softens water and limits scale, and the carbon adsorbs chlorine and odours, reduces colour and intercepts heavy metals such as lead and mercury.
Typical placements are the pre-carbon (CTO) or post-carbon (T33) stage in household reverse-osmosis purifiers, direct-drinking machines, side-by-side refrigerator filters and commercial coffee machines. Zanxis supports OEM/ODM: length, diameter and inner/outer diameter ratios can be tooled to the device, and end-cap welding is available. More than 1,000 filtration solutions have been developed, so a new size does not necessarily mean a new platform.
Our own laboratory holds CNAS (China National Accreditation Service for Conformity Assessment) accreditation and issues test reports for filtration efficiency, dust holding capacity and resistance. For this carbon rod, the chlorine removal rate of ≥90% and the service-life figures above are the values to request in report form.
Quality control runs through IQC, IPQC and OQC, and the plant holds IATF 16949 (obtained in 2024) together with ISO 9001, ISO 14001 and ISO 45001. The production base covers 50,000 m², including six clean workshops totalling 20,000 m², which supports clean-room production of drinking-water components. Products meet REACH and RoHS requirements and compliance documents are available. Zanxis is located in Zhongshan, Guangdong, China.
To receive samples and the matching test report, send us:
We will reply with a sample plan, the applicable CNAS report and a quotation. Contact us to start the validation.
Yes. Our CNAS-accredited laboratory issues reports covering filtration efficiency, dust holding capacity and resistance. For this carbon rod you can request the chlorine removal rate (≥90%) and service-life data. Custom specifications are tested to the agreed parameters before shipment.
Standard specifications can be shipped from stock, with 3–5 free samples (freight collect) typically dispatched within days. Custom specifications take about 7–10 working days for sampling. We recommend testing flow, pressure drop and chlorine breakthrough in your own rig alongside our report.
For standard carbon rods the MOQ is usually 1,000–2,000 pieces, depending on size and packaging. Custom models start at 5,000 pieces. Long-term customers can arrange scheduled deliveries to align with production.
Standard items ship in about 7–15 days. OEM production runs typically take 25–35 days after sample and specification sign-off. The Zhongshan plant runs multiple automated lines, which helps hold these schedules.
At ≤2 ppm inlet chlorine and 1 L/min flow, the Ф38×57 rod is rated for about 3,000–6,000 litres or 6–12 months. Actual replacement depends on water quality and usage; we include clear change-out guidance in the packaging and technical file.
Yes. Length, diameter and inner/outer diameter ratios can be tooled to your device, and end-cap welding is available. The Ф38×57 size is one standard reference; other sizes in the table can be adjusted. Send a drawing and we will confirm feasibility.
Products meet REACH and RoHS requirements and compliance files are available. Our drinking-water products hold NSF and EPA certifications, and the plant is ISO 9001, ISO 14001, ISO 45001 and IATF 16949 certified. We can supply the relevant documents with your order.
Yes. Share the device model, drawing or size, water flow and operating conditions, quantity and packaging needs, and we will send a quotation with the sample plan and applicable test reports. Use the contact link to submit these details.