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Celrith paper-based humidifier filters are cylindrical wicks made from highly absorbent humidifier paper and polymer fiber, designed to draw water by strong capillary action and release it as clean, invisible moisture. They capture calcium and magnesium ions to suppress white dust, resist mold and odor, and are built for cold-evaporation humidifiers, humidifying air purifiers, and constant-temperature/humidity equipment. This filter is for appliance makers and HVAC OEMs who need consistent humidification performance in a compact, customizable format.
Humidifiers rarely fail because of the water alone. They fail because of what the water carries and what grows in it. Tap water contains calcium and magnesium ions that, once atomized or evaporated, settle as fine white dust on furniture, screens, and floors. In the tank and on the wick, those same minerals become a food source for mold and bacteria, which produce the sour, musty smell that makes users switch off the machine. Airborne dust, hair, and lint pulled in with the air stream add to the load, clogging the evaporative surface and reducing output.
Celrith filters are engineered around those contaminants. The paper matrix is treated for long-acting antibacterial and anti-mold performance, so the wick stays fresh between replacements. The dense honeycomb pleats intercept calcium and magnesium ions, reducing the white-dust effect that is especially visible on dark surfaces. At the same time, the filter media captures dust and hair from the incoming air, keeping the evaporated moisture cleaner and the device interior tidier.
When a wick loses its absorption speed, the humidifier has to run longer to reach the set humidity. That extra run time increases energy use, accelerates mineral buildup on the wick, and puts more stress on the fan and water pump. A sagging or collapsed filter is worse: it restricts airflow, creates standing water pockets, and lets the evaporation rate drop sharply. In hard-water areas, scale can bridge the pleats within weeks, turning a high-output humidifier into a weak one.
The same load appears in humidifying air purifiers and industrial constant-temperature/humidity chambers, where a clogged wick forces the system to compensate with higher fan speeds or longer cycles. The result is more noise, more maintenance calls, and shorter intervals between filter changes. Celrith addresses this by maintaining a high wet stiffness, so the cylinder keeps its shape even after long soaking in the water tank. The pleated honeycomb structure provides a large evaporation area, which means the filter can release moisture quickly without relying on extreme airflow.
Celrith humidifier filters are built from high-absorption humidifier paper and polymer humidifier fiber. The material is chosen for a strong capillary effect: water climbs rapidly through the paper and evaporates from the pleat surfaces. Because the pleats are densely folded into a honeycomb pattern, the usable evaporation area is much larger than the cylinder’s outer dimensions suggest. This helps the humidifier reach target humidity faster and recover more quickly after a door opens or the room dries out.
Durability in wet conditions is the second design focus. The filter has very high wet stiffness, so it does not soften, sag, or come apart during continuous immersion. That matters for cold-evaporation humidifiers that sit with their wick partly in water for months. The antibacterial and anti-mold treatment works alongside the paper structure to limit the sour smell that comes from standing water and mineral deposits. Celrith also offers 100% structural and dimensional OEM customization: outer diameter, inner diameter, height, pleat count, and the option of a composite anti-mold coating can all be manufactured to drawing. Whether you need a standard cylindrical wick or a housing-specific shape, the filter is made to your specification rather than trimmed from a fixed catalogue size.
| Item | Detail |
|---|---|
| Product name | Cylindrical humidifier filter / humidifying wick for air purifiers |
| Core humidification material | High-absorption humidifier paper and polymer humidifier fiber |
| Core performance | Strong capillary water uptake and moisture release; intercepts calcium and magnesium ions to reduce white dust; long-acting antibacterial and anti-mold protection; helps remove tank odor |
| Physical structure | Dense pleated honeycomb design for a large evaporation area; very high wet stiffness, so it resists collapse and disintegration during long soaking |
| Typical end applications | Household cold-evaporation (no-mist) humidifiers, high-end air purifiers with humidification, industrial constant-temperature/humidity equipment |
| Customization | 100% OEM flexible manufacturing: outer diameter, inner diameter, height, pleat count, and optional anti-mold/antibacterial coating made to drawing |
| Quality system | Manufactured in a 50,000 m² modern clean plant; ISO 9001/14001 and IATF 16949 certified; supported by a CNAS-accredited testing laboratory |
Celrith paper-based humidifier filters are used by manufacturers of household cold-evaporation humidifiers that need a reliable, odor-free wick with predictable absorption. They are also specified for high-end air purifiers that combine filtration with humidification, where the filter must fit a defined cylindrical space and work with the unit’s existing water tank and fan. Industrial constant-temperature and constant-humidity equipment makers use the same media for stable moisture release in test rooms and process environments.
Because the filter is fully customizable, it suits OEM and ODM programs where the wick is part of a new humidifier platform or a replacement-filter line. Appliance brands that want a private-label filter can specify dimensions, pleat count, coating, and packaging. The common thread is a need to control white dust, odor, and wick collapse without redesigning the humidifier’s water system.
Celrith humidifier filters are produced under a quality system that includes ISO 9001, ISO 14001, and ISO 45001 certification, with IATF 16949 added in 2024. Products meet REACH and RoHS environmental requirements, and compliance documents are available. The manufacturing base in Zhongshan, Guangdong, China, covers 50,000 m², including six cleanrooms totaling 20,000 m², which supports controlled production of water-contact filter media.
Quality control runs through IQC, IPQC, and OQC, and the company’s own laboratory is CNAS-accredited for tests such as filtration efficiency, dust holding capacity, and resistance. With more than 20 years of filter development and manufacturing experience, the company has built over 1,000 filtration solutions and exports to Europe, the United States, Japan, and South Korea. Multiple automated production lines support monthly output in the millions of pieces, which helps keep OEM programs supplied as volumes grow.
To quote a Celrith humidifier filter for your device, please send the device or vehicle model (if applicable), the required size or a drawing, the target airflow or water flow, the operating conditions (water quality, temperature, humidity), and your estimated quantity. Our team will confirm the filter structure and provide a quotation. Contact us to start the conversation.
Celrith paper-based humidifier filters intercept calcium and magnesium ions from water to reduce white dust, capture dust, hair, and lint from the incoming air, and use long-acting antibacterial and anti-mold treatment to limit sour tank odor. The pleated honeycomb structure keeps the evaporation surface large so the filter can release moisture quickly. These functions are built into the paper and fiber media rather than added as a separate stage.
The filter media is designed to trap calcium and magnesium ions before they reach the air stream, which reduces the fine white powder that settles on surfaces. Antibacterial and anti-mold treatment works with the high wet stiffness of the paper to discourage the growth that causes sour smells in standing water. Regular replacement also helps; the typical service life is 3–6 months depending on water quality and usage.
Yes. Celrith offers 100% structural and dimensional OEM customization, including outer diameter, inner diameter, height, pleat count, and optional anti-mold or antibacterial coating. Filters are manufactured to drawing rather than cut from a fixed catalogue. Please provide a sample, drawing, or the humidifier model so the team can confirm the fit.
For standard specifications, the MOQ is usually 5,000 pieces, and custom items are evaluated based on tooling and material minimums. Normal lead time is 15–25 days after order confirmation, with 30–45 days for bulk orders. First-time custom projects need an additional 7–15 days for sample approval.
Yes. Celrith can provide samples of existing standard filters free of charge, with the customer covering international courier costs. For custom samples that require tooling or special materials, a sample fee applies and is deductible from the bulk order. The CNAS-accredited lab can also support testing documentation if you need to verify performance.
Under normal use, the recommended replacement interval is 3–6 months, depending on water hardness and daily running hours. In hard-water areas or high-usage settings, the filter may need changing sooner because mineral buildup reduces absorption speed. The high wet stiffness helps the filter keep its shape between changes, but replacement is still needed to maintain output and odor control.
Celrith products comply with REACH and RoHS environmental requirements, and compliance documents are available. The manufacturing system is certified to ISO 9001, ISO 14001, ISO 45001, and IATF 16949 (2024). The company’s own CNAS-accredited laboratory supports filtration and material testing.
Send the humidifier or device model, required size or drawing, target airflow or water flow, operating conditions, and estimated quantity through the contact page. Celrith will confirm the filter structure and respond with a quotation. <a href="/en/contact">Contact us</a> to begin.