Air Filters for Cleanrooms

1. ‌Types of Filters and Their Functions‌

• ‌HEPA/ULPA Filters‌: HEPA filters capture particles ≥0.3 μm with 99.99% efficiency, while ULPA filters target particles ≥0.12 μm with 99.999% efficiency. They are typically installed at the air supply terminal.
• ‌Pre-Filters (Primary/Medium Efficiency)‌: Primary filters remove particles ≥5 μm, and medium filters handle 1–5 μm particles, protecting HEPA/ULPA filters and extending their lifespan.
• ‌FFU (Fan Filter Unit)‌: Integrated units combining fans and HEPA filters, enabling modular cleanroom design.

2. ‌Working Principle‌

• ‌Mechanical Filtration‌: Multi-layer filter media (e.g., fiberglass) progressively capture particles.
• ‌Negative Pressure Adsorption‌: Fans create negative pressure zones to draw in and filter contaminated air.
• ‌Smart Control‌: Modern systems adjust airflow automatically to meet varying cleanliness requirements.

3. ‌Applications‌

• ‌Industrial Cleanrooms‌: Semiconductor manufacturing requires Class 10 cleanliness (≤10 particles ≥0.1 μm per cubic meter), relying on HEPA/ULPA filters.
• ‌Pharmaceutical/Electronics Industries‌: necessitate integrated cleanroom HVAC systems, air showers, and positive-pressure environments.

4. ‌Maintenance Guidelines‌

• ‌Regular Replacement‌: Replace pre-filters when pressure drop doubles; HEPA filters every 1–2 years.
• ‌Environmental Monitoring‌: Continuously track particle count, temperature, and humidity; investigate anomalies promptly.

Shenzhen ZhongJian South Environment Co., Ltd was founded in 2003.

Which is the only high-tech technology company in Southern China with CNAS certification

We are mainly engaged in Designing Manufacturing, Testing & Verification, Manufacturing Processes and Quality Control, Engineering & Installation and After-Sale Service of clean room and devotes to control and treatment of air PM2.5, formaldehyde, benzene, VOC and other toxic and hazardous substances.

Our main clean room products and equipment include air filter, air shower/cargo shower room, high efficiency air outlet, FFU, AMC chemical filter.

We serve chip microelectronics, data centers, chemical laboratories, new energy, medical devices, pharmaceutical manufacturing, food and beverage, cosmetics, biotechnology, precision instruments, aerospace and other industries. The business fields involve clean room products and equipment, air micro-pollution services, clean design and installation, including household fields, commercial fields, industrial fields and animal husbandry fields.

We won good reputation in this industry. Products and services are highly acknowledged and recommended by customers, we hold strong influence and competitiveness in the market as well. With the mission of being the leading enterprise in Control and Treatment of Air Micro-Pollution, We strive for the leapfrog development of products, technologies and services in Spirit of The Pioneering, Innovative, Combatant and Progressive. We would constantly bring forth new ideas in the innovation and development with protection and sustainable China's environment.