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This activated carbon filter cartridge is a drop-in water treatment component for pitcher and bottle systems, combining coconut-shell activated carbon with ion-exchange resin to reduce chlorine, taste and odour, hardness, and heavy metals such as lead and copper. It is designed for appliance and water-filter brands that need a reliable, customisable cartridge for household pitchers, portable bottles, and small appliance reservoirs. Ranveth manufactures it in Zhongshan, Guangdong, China, with OEM flexibility on media ratio and housing tooling.
The performance of a pitcher cartridge comes from how its two active media are paired. In this build, high-iodine-value coconut-shell granular activated carbon handles the fast adsorption work: it takes up residual chlorine and the dissolved organic compounds behind off-tastes and odours. Ion-exchange resin runs alongside it to soften the water by exchanging calcium and magnesium ions, and to capture heavy-metal ions such as lead and copper. The ratio between carbon and resin is the main lever a buyer can pull: more carbon favours taste and chlorine reduction, while more resin favours scale control and lead reduction.
Around the media, a food-grade PP housing and a precision-moulded filter screen set the hydraulic behaviour. The screen is sized to let water pass by gravity at a steady seep rate while holding the carbon fines inside the cartridge, so the first litres drawn through do not run dark. This is a gravity-fed design, so its flow rate is governed by the head of water above it and the permeability of the packed bed rather than by line pressure. That pairing of media and layer structure is what a buyer should evaluate: it determines not only efficiency but also flow resistance and service life.
Because the media ratio and housing geometry are adjustable, the same architecture can be tuned for different water qualities and different pitcher or bottle formats. A market with hard water may call for a higher resin share, while a market focused on taste and odour may call for more carbon. Ranveth treats the media pairing as the starting point of each custom project rather than a fixed recipe.
| Item | Detail |
|---|---|
| Product name | Water pitcher filter cartridge / drinking bottle filter cartridge (chlorine removal type) |
| Core filtration materials | Food-grade PP housing + high-efficiency coconut-shell granular activated carbon + quality ion-exchange resin |
| Core purification functions | Strong adsorption of residual chlorine, off-colours and off-odours; water softening (removal of calcium and magnesium scale); interception of harmful heavy metals such as lead and copper; filtration of sand, rust and suspended solids |
| Flow and filtration characteristics | Precision injection-moulded filter screen designed to maintain an excellent gravity-fed seep rate while preventing internal carbon fines from leaking, so the water does not run black during use |
| Main end applications | Household water pitchers, portable sports water bottles, desktop instant-heating water dispensers, filter components in the water tanks of capsule coffee machines |
| Media ratio and tooling customisation | 100% OEM flexible contract manufacturing. The mixing ratio of activated carbon to resin can be adjusted to meet target lead-removal and scale-control requirements; housing shape and structure are fully supported with customer-specific injection moulds |
| Quality certification and safety systems | Produced in the company's 20,000 m² cleanroom area, conforming to international water-contact and food-contact safety standards. The company holds ISO 9001 and ISO 14001 system certification and IATF 16949 certification |
These cartridges are built into consumer water products where gravity does the pumping. The most common host is the household water pitcher, followed by portable sports bottles with a filter core in the cap or neck. They also appear as filter components in desktop instant-heating dispensers and in the water reservoirs of capsule coffee machines, where chlorine and odour reduction protects both taste and the appliance's water path.
Because the cartridge is a component rather than a finished appliance, it is usually specified by the brand that owns the pitcher, bottle, or appliance design. Ranveth supplies it as an OEM part, so the housing shape, connector geometry, and media blend can be matched to the host product rather than forced into a single universal format.
To quote a custom cartridge accurately, we need the following inputs. Please send as much as you have at the enquiry stage; our engineers will confirm the rest with you.
With these details, Ranveth can propose a media pairing and housing concept, then move to samples and tooling.
Ranveth's media choices are backed by measurement. Our in-house laboratory is accredited by CNAS (China National Accreditation Service for Conformity Assessment) and can issue test reports on filtration efficiency, dust-holding capacity, and resistance, so the carbon-to-resin ratio in your cartridge is supported by data rather than assumption.
Production takes place in a 50,000 m² plant in Zhongshan, Guangdong, China, which includes six cleanrooms totalling 20,000 m². Water-contact cartridges are assembled and packed in a controlled cleanroom environment to reduce the risk of secondary contamination.
The quality system covers ISO 9001, ISO 14001, and ISO 45001, and in 2024 the company added IATF 16949 automotive quality management certification. Products comply with REACH and RoHS environmental regulations, and compliance documents can be provided.
With more than 20 years of filtration product development and manufacturing, Ranveth has supplied OEM and ODM projects to markets in Europe, the United States, Japan, and South Korea. More than 1,000 filtration solutions have been developed, and multiple automated lines support monthly output in the millions of pieces.
Quality control runs through IQC, IPQC, and OQC at every stage, so incoming media, in-process assembly, and outgoing cartridges are each checked before release.
If you are evaluating a cartridge for a new pitcher or bottle program, we can supply samples and a quotation against your specification. To help us respond precisely, please include the host model, size or drawing, target flow, operating conditions, and quantity in your message. Our team will reply with a proposed media pairing and next steps. Contact Ranveth to start the conversation.
It pairs high-iodine-value coconut-shell granular activated carbon with quality ion-exchange resin inside a food-grade PP housing. The carbon targets residual chlorine, off-colours and off-odours, while the resin softens water and captures heavy metals such as lead and copper. The ratio between the two can be adjusted for your target water quality.
A higher carbon share favours chlorine and taste-and-odour reduction, while a higher resin share favours scale control and lead reduction. Because the cartridge is gravity-fed, the packed bed and the precision-moulded screen together set the seep rate and resistance. We tune the pairing so efficiency and flow stay balanced for your pitcher or bottle format.
Yes. The housing shape and structure are fully supported with customer-specific injection moulds, and the carbon-to-resin ratio can be adjusted. We also support custom logos and packaging. Send your drawing or sample socket and we will confirm the fit.
Yes. We supply samples for evaluation and quote against your specification. To quote accurately, please send the host model, size or drawing, target flow, operating conditions, and quantity. Our team will propose a media pairing and outline the next steps.
MOQ depends on the housing tooling and packaging you require, so we confirm it per project rather than quoting a single figure. For standard formats, MOQ is lower than for a new moulded housing. Share your annual volume and we will set an MOQ that fits your programme.
Lead time depends on whether the housing is standard or needs new tooling, and on packaging complexity. We confirm a schedule with your quotation after reviewing the drawing and quantity. For repeat orders, we can discuss planned production slots to keep your supply stable.
Replacement interval depends on source water quality, daily volume, and the media ratio you choose; it is not a single fixed number for all markets. We recommend setting the interval from your own test data for the target market. Ranveth can support that testing with reports from our CNAS-accredited laboratory.
Our in-house laboratory is accredited by CNAS and can issue test reports on filtration efficiency, dust-holding capacity, and resistance. That means the media pairing in your cartridge can be validated with measured data. If you have specific contaminants to target, tell us and we will align the test plan and the media ratio.