In clean room construction and decoration, the selection of materials and adherence to proper procedures are crucial to maintaining a controlled and contamination-free environment. The following guidelines outline key requirements for ensuring quality and compliance:
1. **Sealing and Coating Materials**: All elastomeric sealing materials and dust-proof coatings used in clean rooms must be accompanied by clear labeling that includes ingredients, product type, manufacturing date, storage instructions, expiration date, and construction methods. A valid certificate of qualification is also required. It is essential to avoid using expired or unapproved products.
2. **Cement Mortar and Terrazzo Floors**: The cement used for the mortar foundation should have a grade of at least 425. For terrazzo flooring, pebbles with a diameter of 6–15 mm are recommended. After fine grinding, the surface should be coated with a non-volatile protective material to ensure durability and cleanliness.
3. **Wall and Ceiling Plastering**: High-grade plastering is necessary for walls and ceilings in clean rooms. Sufficient curing time must be allowed to prevent deformation, mildew, or chalking. Avoid using materials that may cause damage due to heat or moisture exposure.
4. **Wood Usage**: The moisture content of wood used in clean rooms should not exceed 16%. Wood should not be exposed directly, and materials like plasterboard, glued panels, and wooden keels must be treated for moisture or waterproofing. In bio-clean rooms, the use of wood and standard plasterboards as surface materials is discouraged.
5. **Metal and Wooden Components**: Embedded metal parts, such as iron components and wooden frames, must be securely fastened. Proper treatment is required for wooden frames, and any exposed metal parts should be rust- or corrosion-resistant.
6. **Material Joints**: When sealing joints between different materials with elastic materials, appropriate slots or gaps should be reserved to allow for expansion and contraction without compromising the seal.
7. **Structural Integrity**: All building components, partitions, ceilings, and suspensions must be connected to the main structure. No brackets (such as conveyor booms, duct hangers, or vibrating equipment) should be attached to pipeline supports.
8. **Door and Window Sealing**: The gaps between doors and windows should be sealed on the positive pressure side to maintain air flow control and prevent contamination.
9. **Reconstruction and Repair**: After removing partition walls, drilling holes, or penetrating walls and floors during reconstruction, all areas should be repaired and decorated properly to prevent dust accumulation.
10. **Pipeline Concealment**: Pipeline concealment should only begin after the pipeline installation and pressure testing are complete. Any holes through walls or ceilings should be tightly sealed with appropriate materials, and inspection ports should be equipped with gas-tight gaskets.
11. **Moisture Protection**: A 0.4–0.6 mm thick waterproof film should be installed under the floor base as a moisture barrier. This film should be secured with tape, and the concrete pouring process should avoid passing through the clean room area. The moisture content of the foundation should not exceed 6–8%.
12. **Skirting Board Installation**: The skirting board should be flush with the wall surface or slightly raised by 2–3 mm. If it matches the floor material, it can be rounded with a radius of at least 50 mm. If it differs from the floor material, an elastic material should be used for the joint.
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**BHC-1300IIA/B3 Biological Clean Safety Cabinet**
The BHC-1300IIA/B3 biological clean safety cabinet is a vital piece of equipment in modern microbiology laboratories, particularly those requiring operator protection. It is widely used in medical, pharmaceutical, and research settings to provide a sterile, dust-free, and safe environment for bacterial cultures and other sensitive procedures.
**Key Features:**
1. **Constant Airflow**: Provides 100% discharge with a negative pressure drooping flow to ensure a safe working environment.
2. **Adjustable Glass Door**: The glass door can be moved up and down and positioned freely, with a height limit alarm for sterilization and safety.
3. **Power Outlet**: Includes a power outlet in the work area for convenience.
4. **High-Efficiency Filtration**: Two layers of HEPA filters ensure 99.999% efficiency in filtering particles, fumes, and microorganisms.
5. **Durable Construction**: Made from high-quality 304 stainless steel, offering a smooth, seamless surface that is easy to disinfect and resistant to corrosion.
6. **Digital Control Panel**: Equipped with an LED LCD panel for intuitive operation and monitoring.
7. **Filter Failure Alarm**: Alerts users in case of high-efficiency filter failure.
8. **Airflow Alarm**: Detects airflow issues and alerts the user immediately.
**Technical Specifications:**
- **Cleanliness Level**: 100 @ ≥0.5μm (US Federal 209E)
- **Colony Count**: <0.5 pcs/dish (90mm culture plate)
- **Noise Level**: ≤62dB(A)
- **Average Wind Speed**: 0.38±0.025 m/s
- **Front Suction Wind Speed**: 0.55±0.025 m/s
- **Vibration**: <5μm (x, y, z directions)
- **Illumination**: ≥300LX
- **Gas Flow Rate**: ≤10â»â¶ m/s (under 500Pa pressure)
- **Power Supply**: AC, single phase 220V/50Hz
- **Maximum Power Consumption**: 600W
- **Weight**: 350kg
- **Working Dimensions**: 1340×650×600mm
- **Overall Dimensions**: 1540×800×1950mm
- **HEPA Filter Size**: 1335×600×38×1mm
- **UV / Fluorescent Lamps**: 16W×2 / 15W×2
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