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Celrith flat activated carbon filter mesh is a plate-style adsorption filter designed to capture odours, volatile organic compounds (VOCs) and other gaseous contaminants from air streams. It is used in residential and commercial air purifiers, fresh-air systems, vehicle cabin air filters, central air-conditioning loops and vacuum cleaner filters, as well as for industrial exhaust pre-treatment. The filter is offered by Celrith, a China-based filtration manufacturer with more than 20 years of experience in developing and producing filter solutions.
Everyday indoor air carries a mix of gases that particulate filters cannot stop. Formaldehyde from pressed wood and furnishings, benzene and other VOCs from paints and cleaning products, ammonia from household sources, and sulphur compounds that produce persistent odours all pass through standard dust filters. In vehicles, exhaust fumes and fuel vapour can enter the cabin; in commercial buildings, cooking and occupant-generated odours circulate through ventilation. These gases are not only unpleasant but can also reduce perceived air quality and, over time, affect equipment surfaces and components. A dedicated gas-phase filter is needed to adsorb them before they reach the breathing zone or downstream equipment.
When gaseous contaminants are not removed, they impose a hidden load on air-handling systems. Odour molecules and VOCs can deposit on coils, fans and ductwork, forming sticky films that attract dust and encourage microbial growth. In air purifiers, saturated carbon or unadsorbed gases can lead to odour breakthrough, forcing the blower to run longer and increasing energy use. In vehicle cabins, unfiltered exhaust gases and smog can cause driver discomfort and reduce air quality during commutes. Industrial exhaust streams carrying solvents or odorous compounds may require pre-treatment to protect downstream carbon beds or catalytic units. In each case, a properly specified activated carbon filter reduces the contaminant load at the point of use, helping maintain system performance and indoor air quality.
Celrith flat activated carbon filters use high-performance activated carbon as the adsorption medium. The carbon is available in several structural forms to suit different applications: honeycomb activated carbon blocks (sintered), plastic honeycomb, corrugated paper honeycomb, and cylindrical carbon filters. This variety allows the filter to be adapted to different airflow patterns, pressure-drop requirements and space constraints. The carbon media are selected for their ability to adsorb and remove formaldehyde, benzene, ammonia and other volatile harmful gases (VOCs).
Each filter is custom-made to match the customer's equipment parameters and requirements. Celrith offers non-standard sizes and configurations, so the filter can be designed to fit specific air purifier models, fresh-air units, vehicle HVAC systems or industrial housings. The flat plate format is straightforward to integrate into existing filter racks or frames, and the choice of carbon form can be matched to the target gas and operating conditions. This custom approach helps ensure that the filter delivers effective adsorption without unnecessary pressure loss or bypass.
| Item | Detail |
|---|---|
| Core material | High-performance activated carbon |
| Structural options | Honeycomb activated carbon filter (sintered block); honeycomb activated carbon filter (plastic honeycomb); honeycomb activated carbon filter (corrugated paper type); activated carbon filter (cylindrical) |
| Purification performance | Efficient adsorption and removal of formaldehyde, benzene, ammonia and other volatile harmful gases (VOCs) |
| Application areas | Residential/commercial air purifiers, fresh-air systems, vehicle air-conditioning filters, central air-conditioning circulation systems, vacuum cleaner filters, and industrial exhaust gas treatment |
| Dimensions and specifications | Non-standard customisation according to customer's specific equipment parameters and requirements |
Celrith flat activated carbon filters are used by manufacturers and operators of air purification and ventilation equipment. Typical users include:
Because the filters are custom-made, they can be tailored to the specific dimensions, airflow and contaminant profile of each application.
Celrith operates a 50,000 m² manufacturing plant in Zhongshan, Guangdong, China, which includes six cleanrooms totalling 20,000 m². The company holds ISO 9001, ISO 14001 and ISO 45001 certifications, and in 2024 obtained IATF 16949 automotive quality management system certification. Products comply with REACH and RoHS environmental regulations, and compliance documentation can be provided. Celrith's in-house laboratory is CNAS-accredited and can issue test reports for filtration efficiency, dust holding capacity, resistance and related parameters. With over 20 years of experience, the company has developed more than 1,000 filter solutions and supports OEM/ODM projects with custom dimensions, structures, media grades, frame materials, logos and packaging.
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Send your requirements through our contact page and our team will respond promptly with technical recommendations and pricing.
The filter adsorbs formaldehyde, benzene, ammonia and other volatile harmful gases (VOCs). Its activated carbon medium is effective against common indoor odours and gaseous pollutants. Specific performance depends on the carbon form and operating conditions.
Efficiency varies with the target gas, concentration, airflow and carbon type. Because each filter is custom-made, Celrith can select the carbon form and loading to meet the required removal rate. Contact us with your specifications for a tailored solution.
Yes. Celrith offers non-standard customisation based on your equipment parameters and requirements. Dimensions, structural form (honeycomb block, plastic honeycomb, corrugated paper or cylindrical) and other details can be adapted to your design.
Replacement intervals depend on the contaminant load, airflow and operating hours. In typical indoor air purification, 6 to 12 months is common, but actual life should be determined by monitoring odour breakthrough or following the equipment manufacturer's guidance. Celrith can provide test data to help estimate lifespan.
MOQ for standard specifications is typically 500–1,000 pieces. For custom specifications, MOQ is negotiated based on the specific solution. Flexible MOQ policies are available for strategic customers.
Standard products ship in 7–15 days. OEM custom orders generally take 25–35 days for mass production. Large orders can be optimised for shorter schedules. Celrith's supply chain in the Pearl River Delta supports stable delivery.
Yes. Standard samples are usually provided free of charge, with the customer covering international courier costs. Custom samples may incur a tooling and sampling fee, which is deductible from a bulk order. CNAS laboratory test reports can be included with the sample.
Keep the filter in its sealed packaging until use to prevent odour adsorption or moisture damage. Store at 5–35°C and ≤70% relative humidity, away from solvents and volatile substances. Use within 12 months of production for best performance.