Customized Clean Room Easy Installation dust free H13 H14 ISO Standard Modular for Laboratory with Hepa FFU fan
Clean room design
A cleanroom is a controlled environment designed to minimize the presence of airborne particles, contaminants, and pollutants, while also maintaining specific levels of temperature, humidity, and airflow. Cleanrooms are commonly used in industries where the presence of even minute amounts of contaminants can affect the quality of products or processes, or where precise and sterile conditions are critical.
Airflow → primary effect air treatment → air conditioning → medium effect air treatment → fan pressurized air supply → purified air supply pipeline →Efficient air supply outlet→ clean room → take away dust (bacteria) → return air duct → fresh air and primary air treatment.
The above proces is repeated to achieve that purpose of purification.
1. Controlled Air Quality
- Particle Control: Clean rooms are designed to limit particulate contamination to very low levels. The concentration of particles in the air is carefully monitored and controlled, often classified by the number of particles per cubic meter of air at specific particle sizes.
- Air Filtration: High-efficiency filters, such as HEPA (High-Efficiency Particulate Air) or ULPA (Ultra-Low Penetration Air) filters, are used to remove particles from the air. The air in a clean room is often recirculated through these filters multiple times.
2. Airflow Design
- Positive Pressure: Clean rooms are often maintained at a positive pressure relative to surrounding areas. This ensures that any air that leaks out is filtered, preventing contaminants from entering the room.
- Laminar or Turbulent Flow: The airflow in clean rooms may be laminar (smooth and unidirectional) or turbulent, depending on the class of clean room. Laminar flow helps to direct particles away from the work area and is typically used in high-class clean rooms.
3. Temperature and Humidity Control
- Temperature Stability: Temperature is often maintained within a specific range to ensure the proper functioning of sensitive equipment and to prevent static electricity build-up.
- Humidity Control: Humidity is also regulated to prevent static buildup, reduce the risk of certain contaminants, and ensure material stability.
4. Strict Protocols for Personnel
- Gowning Procedures: Personnel entering a clean room must follow strict gowning protocols, such as wearing coveralls, gloves, masks, hair covers, and shoe covers to prevent contaminants from being brought in.
- Access Control: Entry to the clean room is often restricted and monitored, with only trained personnel allowed to enter.
5. Clean Room Classifications
- Clean rooms are classified based on the number and size of particles allowed in the air. The most common standards for classification are the ISO 14644-1 (international standard for clean rooms) and Federal Standard 209E (outdated but still referenced in some regions).
- ISO Classifications range from ISO 1 (the cleanest) to ISO 9 (the least clean). For instance, an ISO 1 clean room has fewer than 12 particles per cubic meter of air, while an ISO 9 clean room allows up to 35,200,000 particles.
6. Surface Cleanliness
- Smooth, Non-porous Surfaces: Surfaces inside a clean room are typically made from smooth, non-porous materials like stainless steel or epoxy-coated surfaces, which are easier to clean and less likely to harbor contaminants.
- Frequent Cleaning: Clean rooms are regularly cleaned using specific cleaning agents that do not leave residues, and all items entering the room are often sterilized or sanitized.
7. Monitoring and Documentation
- Continuous Monitoring: Clean rooms are equipped with sensors to monitor particle counts, airflow, temperature, and humidity. These readings are often logged continuously and checked against standards to ensure the room’s performance.
- Environmental Control Systems: Advanced monitoring systems can also track air quality, contamination sources, and any deviations from standard protocols to ensure compliance with stringent requirements.
8. Materials and Equipment
- Contaminant-Free Tools: Equipment and tools in a clean room are also controlled for cleanliness, often cleaned or sterilized before use. Materials used in the room, such as packaging and containers, are also often subjected to cleaning or sterilization processes to avoid contamination.
Technical Data
| Cleanliness Level | Maximum Allowable Dust Number/Cubic Meter | Maximum Allowable Number of Microorganism |
| / | ≥0.5um | ≥5um | Airborne Microbe/Cubic Meter | Settling Microbe Number/Vessel·30min |
| 100 | 3500 | 0 | 5 | 1 |
| 10000 | 350000 | 2000 | 100 | 3 |
| 100000 | 3500000 | 20000 | 500 | 10 |
| 300000 | 10500000 | 60000 | / | 15 |
