\ SERVICE
SERVICE
Comparison table of cleanliness requirements of various industries | ||
Industries | Applicable field | Cleanliness (Class) |
Optical industry | Optical lens, scale engraving, Medical camera, Lens bonding process, Camera assembly, | 100100~100,000 |
Precision Machinery Industry | Optical lens, scale engraving, Medical camera, Lens bonding process, Camera assembly, Micro-scaled imaging, Lens grinding process, Coating, Film manufacturing and drying. Electrical contacts, Mini-bearings, Precision induction devices, Electronic clock components, Precision components, Instruments, Bearings, Clocks & Watches assembly and inspection. | 100100~100,000 |
Electronic & Electric industry | Crystallization & Refining of the semiconductor industry, Etching process, Position adjustment, Surface treatment, Metal evaporation, Integrated circuit, Picture tube, Video recorder, Computer tape, Computer manufacturing, Relay. | 100100~100,000 |
Printing industry | Precision platemaking, Electronic platemaking | 10~100100~100,000 |
Mushroom cultivation | Cultivation of Shiitake fungus, Mushrooms, Agaric. | 10,000 |
Breeding | Prevention of Mold/Fungus contamination. | 10,000 |
Meat processing industry | Milk products manufacturing, Fish cakes, Ham, Mushroom manufacturing, Beverage bottling and capping. | 10,000 |
Hospital & Medical | Sterile operating room, Sterile room, Storage of surgical instruments, Premature infant care, General operating room, Intensive care ward, Pharmacy room, Postoperative Intensive Care Unit/Anesthesia Recovery Room | 100~100,000 |
Clinical Examination | Cultivation of bacteria, mold/fungus, tissue, etc. | 10~100100~100,000 |
Pharmaceutical | Antibiotic, Injection and its sealing bottle, Serum fabricate, Medicine tableting, Blood dispensing, Injection syringe, Bandage, Cosmetics manufacturing. | 1001,000~100,000 |
The clean room has certain specifications for the maximum allowable amount of fine dust particles in a certain space according to different grades. The most commonly used specifications in international standards are Fed-Std-209E |
U.S. Federal Standards - 209E Clean room specifications | |||||||||||
Grade limit | |||||||||||
Grade name |
0.1μm Volume unit |
0.2μm Volume unit |
0.3μm Volume unit |
0.5μm Volume unit |
5μm Volume unit |
||||||
SI | Imperial | m3 | ft3 | m3 | ft3 | m3 | ft3 | m3 | ft3 | m3 | ft3 |
M1 | 350 | 9.91 | 75.7 | 2.14 | 30.9 | 0.876 | 10.0 | 0.283 | - | - | |
M1.5 | 1 | 1,240 | 35.0 | 265 | 7.50 | 106 | 3.00 | 35.3 | 1.00 | - | - |
M2 | 3,500 | 99.1 | 757 | 21.4 | 309 | 8.75 | 100 | 2.83 | - | - | |
M2.5 | 10 | 12,400 | 350 | 2,650 | 75.0 | 1,060 | 30.0 | 353 | 10.0 | - | - |
M3 | 35,000 | 991 | 7,570 | 214 | 3,090 | 87.5 | 1,000 | 28.3 | - | - | |
M3.5 | 100 | 26,500 | 750 | 10,600 | 300 | 3,530 | 100 | - | - | ||
M4 | 75,700 | 2,140 | 30,900 | 875 | 10,000 | 283 | - | - | |||
M4.5 | 1000 | 35,300 | 1,000 | 247 | 7.00 | ||||||
M5 | 100,000 | 2,830 | 618 | 17.5 | |||||||
M5.5 | 10000 | 353,000 | 10,000 | 2,470 | 70 | ||||||
M6 | 1,000,000 | 28,300 | 6,180 | 175 | |||||||
M6.5 | 100000 | 3,530,000 | 100,000 | 24,700 | 700 | ||||||
M7 | 10,000,000 | 283,000 | 61,800 | 1,750 |
U.S. Federal Standards - 209D Clean room specifications | |||||||||||
Series | Particle size | Number of particles | Pressure | Temperature °C | Humidity % | Wind speed and air exchange rate | Particles | ||||
um | Particles/ft3 | mmAg | Range | Recommended value | Error value | Max | Lowest | Error value | times/hr | lux | |
1 | ≧ 0.5 | ≦ 1 | >1.3 | 19.4 ~25 |
22.2 |
±2.8 special needs ±1.4 |
45 | 30 |
±10 special needs ±5 |
Layer flow 0.35~0.55m/s |
1,080~1,620 |
≧ 5.0 | 0 | ||||||||||
10 | ≧ 0.5 | ≦ 10 | |||||||||
≧ 5.0 | 0 | ||||||||||
100 | ≧ 0.5 | ≦ 100 | |||||||||
≧ 5.0 | ≦ 1 | ||||||||||
1,000 | ≧ 0.5 | ≦ 1,000 |
Turbulence ≧20 次/hr |
||||||||
≧ 5.0 | ≦ 10 | ||||||||||
10,000 | ≧ 0.5 | ≦ 10,000 | |||||||||
≧ 5.0 | ≦ 65 | ||||||||||
100,000 | ≧ 0.5 | ≦ 100,000 | |||||||||
≧ 5.0 | ≦ 700 |