EN
Celrith Gas Filter Box is a high-efficiency filtration component for ventilators, anesthesia machines, and industrial respirators. It captures PM0.3 particles at ≥99.99% efficiency and adsorbs VOCs and odours, protecting patients and equipment from airborne contaminants. It is designed for medical device manufacturers and industrial safety equipment integrators.
In clinical and industrial settings, air carries more than dust. Ventilator circuits must handle bacterial and viral aerosols, fine particles that penetrate deep into the lungs, and trace volatile organic compounds from disinfectants, anaesthetic gases, or ambient pollution. Industrial respirators face similar challenges, with oil mist, solvent vapours, and odours adding to the load. Left unchecked, these contaminants degrade the breathing air and impose stress on downstream components.
The Celrith Gas Filter Box addresses this by combining a high-precision PTFE membrane or glass fibre media with an activated carbon layer. The result is dual-action filtration: particles are intercepted at the surface while gases are adsorbed within the carbon bed. This layered approach means a single filter box handles both particulate and gaseous threats, simplifying circuit design and reducing the number of separate filters required.
Contaminants do not stay in the air; they settle on sensors, valves, and heat exchangers. In ventilators, particle build-up can impair flow sensors and increase resistance, leading to inaccurate delivery and more frequent maintenance. In industrial masks, clogged filters force the blower to work harder, draining batteries and reducing comfort. Gaseous impurities can also corrode internal parts over time.
By removing particles and gases before they reach critical components, the Celrith filter box relieves this load. Cleaner air means stable flow characteristics, fewer sensor errors, and longer service intervals for the equipment. For end users, it translates to reliable performance and lower total cost of ownership.
The Celrith Gas Filter Box is built around a modular filtration stack. At the core is a PTFE membrane or high-grade glass fibre layer that achieves ≥99.99% removal of PM0.3 particles, meeting HEPA H13/H14 standards. This layer is pleated to maximise surface area, ensuring high efficiency at low pressure drop. Behind it, a composite activated carbon medium adsorbs VOCs, odours, and other gaseous contaminants.
The filter is encased in a medical-grade ABS or PC housing, sealed with a silicone gasket to prevent bypass leakage. The housing can be customised to fit specific device interfaces, including snap-fit connections, threaded ports, or custom flanges. For applications requiring the highest purity, ULPA grades (U15 and above) are available. A washable version is also offered for applications where reuse is acceptable.
Manufacturing takes place under GMP conditions for medical products, with 100% customisation based on customer drawings. This ensures that each filter box integrates seamlessly into the target device, whether it is a ventilator circuit, an industrial mask, or an air purification system.
| Item | Detail |
|---|---|
| Product name | High-efficiency HEPA filter / ventilator filter cartridge |
| Core filter media | High-precision PTFE (polytetrafluoroethylene microporous membrane) / high-grade glass fibre / composite activated carbon |
| Filtration performance | Dual-action: ≥99.99% removal of PM0.3 particles + efficient adsorption and neutralisation of VOCs |
| Efficiency grades | From HEPA H13/H14 to ULPA U15 and above; washable versions available |
| Main applications | Clinical ventilators, anaesthesia machine circuits, industrial respirators/PAPR, high-spec fresh air purification, oxygen concentrators |
| Custom dimensions | Tooling and production to customer drawings; medical-grade ABS/PC housing and silicone gasket sealed by ultrasonic welding for leak-free performance |
| Certifications | Filter efficiency verified by CNAS-accredited laboratory; company holds medical GMP, IATF 16949, ISO 14001, ISO 45001 |
The Celrith Gas Filter Box serves two main user groups. In healthcare, it is specified by manufacturers of ventilators, anaesthesia machines, oxygen concentrators, and emergency respiratory equipment. Hospitals and clinics use it as a replacement filter to maintain clean breathing circuits for patients. In industry, it is integrated into powered air-purifying respirators (PAPR), full-face masks, and supplied-air systems where workers face airborne particles and vapours.
Additionally, the filter box is used in high-end fresh air purification systems and oxygen generation equipment, where both particulate and gaseous contaminants must be controlled. Because the product can be customised in size, shape, and filter media, it adapts to devices ranging from portable homecare units to fixed clinical installations.
Celrith products comply with REACH and RoHS environmental regulations, and compliance documentation is available upon request. The company operates under ISO 14001 and ISO 45001 management systems, reflecting a commitment to environmental and occupational safety. Filter performance is validated in an in-house CNAS-accredited laboratory, which issues test reports for efficiency, dust holding capacity, and resistance.
Manufacturing takes place in a 50,000 m² facility that includes 20,000 m² of cleanrooms across six rooms, supporting GMP-compliant production for medical devices. The company has held IATF 16949 certification since 2024, underscoring its quality management for automotive and medical supply chains. With over 20 years of experience and more than 1,000 filtration solutions developed, Celrith supports OEM/ODM projects with custom dimensions, media grades, and packaging.
To receive a tailored quotation for the Celrith Gas Filter Box, please provide the following details: your device or vehicle model, required dimensions or a drawing, airflow or water flow specifications, operating conditions (temperature, humidity, contaminants present), and estimated quantity. Our engineering team will review your requirements and respond promptly. Contact us to start the conversation.
The Celrith Gas Filter Box removes PM0.3 particles at ≥99.99% efficiency, including bacteria and viral aerosols, and adsorbs VOCs and odours through its activated carbon layer. It is designed for ventilator circuits, industrial respirators, and air purification systems where both particulate and gaseous contaminants are present.
The filter box is available in HEPA H13/H14 grades, which capture ≥99.99% of PM0.3 particles, as well as ULPA U15 and higher for ultra-low penetration applications. A washable version is also offered for suitable use cases, giving flexibility across different device requirements.
Yes, Celrith provides full customisation based on customer drawings. We can adjust housing dimensions, port configurations, filter media combination, and sealing method. Medical-grade ABS or PC housings and silicone gaskets are available to ensure a precise, leak-free fit.
To request a sample and quote, please contact us with your device model, required dimensions or drawing, airflow specifications, and estimated quantity. Our team will review your requirements and provide a tailored proposal, including sample lead time and pricing.
The standard MOQ for the Gas Filter Box is 1,000 pieces. For customised versions involving new tooling or special media, the MOQ may be higher and will be evaluated on a case-by-case basis.
Standard lead time is 25–35 days after order confirmation. For urgent projects, we can prioritise scheduling in our cleanrooms. Custom tooling may add 30–45 days for development, depending on complexity.
Replacement intervals depend on the application. For clinical ventilators, single-use filters should be replaced after each patient, while reusable types typically last 24–72 hours. In homecare ventilators, replacement every 1–3 months is common. Industrial masks follow manufacturer guidelines based on contaminant levels and usage hours.
The Gas Filter Box is manufactured under GMP for medical products, and the company holds IATF 16949, ISO 14001, and ISO 45001 certifications. Filter efficiency is verified by our CNAS-accredited laboratory, and the product complies with REACH and RoHS regulations. Contact us for specific documentation.