Celrith Cylindrical Humidifier Filter (Spunlace Non-woven Fabric)

Celrith cylindrical humidifier filters are self-priming wicks made from spunlace non-woven fabric, designed to draw water upward and release it as vapour in evaporative humidifiers and humidifying air purifiers. They capture calcium and magnesium ions from tap water to suppress white dust, and their antimicrobial treatment resists mould and sour odours. This filter suits appliance brands and OEM buyers who need a replaceable, custom-sized wick that keeps output steady and maintenance low.

The Contaminant Problem

Water is rarely pure. It carries dissolved minerals, organic matter and microbes that become airborne the moment a humidifier starts running. When that water evaporates, calcium and magnesium salts are left behind as fine white powder that settles on furniture, screens and floors. Organic residues feed biofilm inside the wick, and that biofilm is what turns a humidifier sour within weeks.

Airborne particles add to the load. Dust and lint pulled into the unit can clog the evaporative surface, reducing output and forcing the fan to work harder. In appliances that combine humidification with air cleaning, the wick also has to tolerate the particle burden that the main filter passes on. The result is a familiar pattern: falling humidity, rising noise, a musty smell, and a filter that collapses before its expected replacement date.

Load on Equipment and Systems

A saturated or scaled wick puts pressure on every part of the humidifier. Evaporation efficiency drops, so the unit runs longer to reach the set humidity. The fan and pump cycle more often, and energy use climbs. Mineral scale stiffens the fabric, and a stiff wick no longer draws water evenly, creating dry patches that reduce output further.

Microbial growth is the more costly problem. Once mould and bacteria establish in the wick, odour spreads through the room, and the appliance earns a reputation for poor hygiene. In commercial or industrial humidification, unstable output affects process conditions and can interrupt production. Replacing filters too often adds labour and waste, while replacing them too late risks the equipment and the indoor environment.

How Celrith Handles It

Celrith addresses the load at the material level. The spunlace non-woven fabric has a high capillary effect, so water climbs quickly and evaporates efficiently without a pump. Its wet strength keeps the cylinder rigid during long soaking, preventing the collapse and shedding that shorten service life.

The fabric is treated with an antimicrobial and anti-mould process. This suppresses the microbial growth responsible for sour smells and helps the wick stay hygienic between replacements. The material also intercepts calcium and magnesium ions, reducing the white dust that mineral-rich water leaves on surfaces.

Structurally, the pleated cylindrical design packs a large evaporation area into a compact body. More surface means more output at the same fan speed, and the pleats hold their shape when wet. Because Celrith controls the full production process, the filter can be built to your drawing: outer diameter, inner diameter, height, pleat count and optional antimicrobial coating are all adjustable. This is not a catalogue-only part; it is a wick engineered around your appliance.

Key Specifications

Who Uses It

Celrith cylindrical humidifier filters are used by appliance brands that build cold-evaporation humidifiers, by air purifier makers adding a humidifying stage, and by commercial and industrial equipment suppliers that need stable humidity control. Buyers typically come to Celrith when they need a wick that matches an existing housing, meets hygiene expectations in their market, and can be supplied in volume without batch-to-batch variation.

The filter is also a fit for OEM and ODM projects where the humidifier is still in development. Celrith can work from a drawing or a sample, propose pleat counts and fabric weights for the target output, and supply pre-production samples for testing. For brands selling into Europe, North America, Japan or Korea, the material and documentation can be aligned with REACH and RoHS requirements.

Supply Assurance and Credentials

Celrith products comply with REACH and RoHS, and compliance documents are available for buyer review. The company holds ISO 9001, ISO 14001 and ISO 45001 certification, and added IATF 16949 automotive quality management certification in 2024.

Quality data comes from an in-house CNAS-accredited laboratory, which can issue reports on filtration efficiency, dust holding capacity and resistance. Production runs in a 50,000 m² plant that includes 20,000 m² of cleanrooms across six rooms, supported by multiple automated lines with monthly capacity in the millions of pieces. IQC, IPQC and OQC checks cover the full process. Celrith has more than 20 years of filtration experience and has exported to Europe, the US, Japan and Korea for over 20 years, developing more than 1,000 filtration solutions along the way. The company is based in Zhongshan, Guangdong, China.

Talk to Us

To quote a Celrith cylindrical humidifier filter, send your device or vehicle model, the required size or a drawing, the target airflow or water flow, your operating conditions, and the quantity you expect to order. With those details, Celrith can confirm the fabric specification, pleat count and antimicrobial option, and return a sample and price proposal. Start the conversation through our contact page.