Oltaven Sports Water Bottle Activated Carbon Filter Cartridge (Disc Shape)

The Oltaven disc-shaped activated carbon filter cartridge is a finished, food-grade water filter that drops into portable sports bottles and jugs to reduce chlorine, odours, organic matter and some heavy metals while keeping beneficial minerals in the water. It is built for outdoor sports, hiking, travel and everyday portable drinking, and it is made and supplied by Oltaven from Zhongshan, Guangdong, China. This page explains how media choice and forming decide the finished filter's efficiency, resistance and capacity, and how we turn that into a cartridge you can put your name on.

From Media to Finished Filter

A carbon filter is not a bag of charcoal. The finished behaviour of a disc cartridge comes from four decisions made together: which carbon, how it is held, how water is routed through it, and how the outer housing seals. Oltaven sells the finished filter, so we take responsibility for all four.

Media. We use food-grade coconut-shell activated carbon as the core medium. Coconut carbon has a fine pore structure and is well suited to drinking-water applications where taste and chlorine reduction matter. The carbon is matched to the housing by weight, because the amount of carbon sets how much water the cartridge can treat before it is spent.

Holding the media. Loose granules can migrate and shed fines into the drink. The carbon is therefore contained within a food-grade non-woven structure inside an ABS/PP housing. This fixes the media in place, keeps the water path predictable and helps prevent carbon dust reaching the bottle.

Forming the disc. The flat, round shape is chosen for bottles where the filter sits in a narrow neck and water passes through under gravity or light suction. Diameter and thickness are not cosmetic: they set the surface area water crosses and the depth of media it must travel through. A thicker disc gives more contact time and capacity; a thinner one gives lower resistance. The right balance depends on the bottle and how the user drinks.

Sealing and finishing. The housing is joined so that water cannot bypass the carbon. A poor seal lets water take a shortcut and the filter appears to underperform even when the media is good. Assembly and packaging of this cartridge are carried out in cleanroom conditions to avoid re-contamination before the product reaches the user.

What Decides Finished Performance

Three outcomes matter to a brand: how well the filter removes what it should, how easily water flows through it, and how long it lasts. In practice these trade against each other, and the forming choices above decide where the balance lands.

• Efficiency. Chlorine reduction depends on contact between water and carbon. In testing at our CNAS-accredited laboratory, the chlorine removal rate of this cartridge reaches more than 95%. Contact time is shaped by disc thickness, carbon weight and how evenly water spreads across the media.
• Resistance. Flow resistance rises with thicker media beds and finer structures. For gravity-fed bottles this matters more than for pumped systems, so we tune the disc to the way the bottle is used rather than pushing one specification to every customer.
• Capacity. The standard cartridge is rated for roughly 100–200 L of water, about 1–3 months of use depending on water quality and frequency. Carbon weight and formulation can be adjusted so capacity matches the bottle size, target market water and product positioning.
• Cleanliness in use. Containing the carbon and sealing the housing keeps fines out of the drink, which users notice as much as they notice taste.

Because these factors interact, a change to any one of them is verified rather than assumed. Oltaven's laboratory can test flow, chlorine removal and related indicators on semi-finished and finished cartridges, so a specification is confirmed on the actual product, not only on the raw material.

Applications

The disc format suits portable drinking products where space is short and the filter is replaced by the user. Typical uses include:

• Sports water bottles and outdoor hydration bottles for hiking, running and travel.
• Portable water bottles sold with replacement cartridges as a consumable programme.
• Water jugs and pitcher-style containers that rely on gravity flow.
• Private-label and promotional drinkware where the filter is part of the product story.

Because the cartridge is a finished component, it can be packed, branded and shipped as a retail item or as an accessory inside a bottle kit. If your device has a different neck, cap or flow path, the disc can be re-dimensioned rather than forced into a shape that does not fit.

Technical Specifications

The Oltaven Factory and Certifications

Oltaven has more than 20 years of filtration research and manufacturing experience and has exported to Europe, the United States, Japan and South Korea for over two decades. OEM/ODM work is central to what we do: our teams have developed more than 1,000 filtration solutions, covering size, structure, media grade, housing material, logo and packaging.

The production base in Zhongshan, Guangdong, China, covers 50,000 m², including six cleanrooms totalling 20,000 m² where cartridges are assembled and packed. Our in-house laboratory is accredited by CNAS and can issue test reports on filtration efficiency, dust holding capacity and resistance, which supports customers preparing their own market documentation.

Our management systems are certified to ISO 9001, ISO 14001 and ISO 45001, and we gained IATF 16949 automotive quality certification in 2024. Products meet REACH and RoHS requirements and compliance documents can be supplied. Quality control runs through IQC, IPQC and OQC, and multiple automated lines support monthly output in the millions of pieces.

OEM/ODM Workflow

1. Share the requirement. Tell us the bottle or device model, the space available, target flow and the water quality of your market.
2. Define the specification. We propose carbon type and weight, disc diameter and thickness, housing and packaging, then confirm the performance targets to be verified.
3. Sample and test. Samples are produced for your evaluation; where needed, our CNAS laboratory provides preliminary test data for your own certification work.
4. Approve and tool. Once the sample and drawing are approved, tooling and packaging artwork are finalised.
5. Pilot and mass production. A pilot run confirms the process, then mass production follows with IQC, IPQC and OQC checks and batch QC reports.
6. Deliver and repeat. Standard items ship in 7–15 days; custom orders typically take 25–35 days. For long-term partners we can arrange scheduled or split deliveries.

Start a Custom Project

If you are developing a bottle, jug or drinkware line and want a filter that matches it, we would like to work with you. To quote accurately, please send your device or bottle model, the required size or a drawing, the target water flow, the operating conditions (water source, temperature, gravity or pumped flow), and your estimated quantity. If you already have packaging or branding requirements, include those too.

Send your details through our contact page and our team will respond with a proposal and sample plan.