We provide the optimal cleanliness grade suited to each application by establishing a total solution system that covers planning, design, manufacturing, construction, TAB (Testing, Adjusting, and Balancing), and service.
With advancements in semiconductor manufacturing, aerospace, electronics, and precision industries, there is an increasing demand for higher precision, miniaturization, high quality, and high reliability of products. Airborne particles in the indoor environment can adhere to products during manufacturing, causing defects and negatively impacting the production of products suitable for their intended purpose. This, in turn, has a significant impact on product reliability and yield rates. It is essential to maintain a clean environment that meets the required environmental conditions for the production process.
A controlled space designed to prevent contamination caused by biological particles such as bacteria and mold. Pharmaceutical (GMP), sterile operating rooms in hospitals, animal testing laboratories (GLP), food processing plants, and hospital surgical rooms require an environment close to sterility. This near-sterile state can be achieved using high-performance filters.
Consists of indoor and outdoor sections, controlling the dry-bulb temperature and wet-bulb temperature of each test room. It measures the leaving air temperature, differential pressure, and power consumption of the test product. All test-related data can be monitored through communication with measuring instruments.
[Manufacturing Standards]
To maintain cleanliness in a cleanroom, personnel entry, material transfer, and differential pressure control are managed. Various equipment such as air handling units (AHU), air showers, pass boxes, clean units, relief dampers, FFUs, and BFUs are installed and operated to ensure cleanliness.
| Industry | CLASS | |||||
| 10 | 100 | 1,000 | 10,000 | 100,000 | ||
| ICR Application Areas & Cleanliness Levels | Semiconductor | SILICON CRYSTALLIZAION | ||||
| WAFER MANUFACTURE | ||||||
| DIFFUSION | ||||||
| WAFER PROCESSING | ||||||
| PHOTOLITHOGRAPHY | ||||||
| IC CHIP MANUFACTURE | ||||||
| ASSEMBLING | ||||||
| INSPECTION | ||||||
| Electronics | MAGNETIC DRUM TAPE | |||||
| SHADOW MASK | ||||||
| HIGH RELIABLE TUBE | ||||||
| Precision Machinery | GYROSCOPE MINUTIA BEARING | |||||
| PARTS FOR ROCKET | ||||||
| WATCH·METER·BEARING | ||||||
| Optical Printing | LENS | |||||
| LSI MASK | ||||||
| PRINT CIRCUIT BOARD | ||||||
| FILM | ||||||
| PRECISION PRINT | ||||||
| Others | LAUNDRY FOR CLEAN GARMENTS | |||||
| LASER GENERATOR | ||||||
| BCR Application Areas & Cleanliness Levels | Medical | SPECIAL OPERATION | ||||
| NORMAL OPERATION | ||||||
| 특수치료실 SPECIAL TREATMENT | ||||||
| ICU,CCU RECOVERY ROOM | ||||||
| NEONATAL ROOM | ||||||
| CLINIC INSPECTION | ||||||
| 약제실 MEDICINE ROOM | ||||||
| Pramaceutical | INJECTION | |||||
| PATHOGEN FREE ANIMAL | ||||||
| SPF | ||||||
| ANTIBIOTIC | ||||||
| NORMAL MEDICINES | ||||||
| PREPARATION PROCESS | ||||||
| Food Processing | BREW·FERMENTATION | |||||
| DAIRY PRODUCTS | ||||||
| FOOD PROCESSING | ||||||
| PASTE | ||||||
| Agriculture | MUSH ROOM | |||||
| ARTIFICIAL CULTURE | ||||||
| RAISING | ||||||
| Bio Harzard | EXPERIMENTING-PATHOGEN | |||||
| GENETIC ENGINEERING | ||||||
| TUMOR VIRUS | ||||||
| Cleanliness Class | Airborne Microorganisms (particles/ft³) | Settling Microorganisms (particles/ft³.week) |
| 100 | 0.1 | 1,200 |
| 10,000 | 0.5 | 6,000 |
| 100,000 | 2.5 | 30,000 |
| Grade | Particle concentration | Airborne microbial concentration (CFU/㎥) | |
| 0.5~5 | 5 | ||
| A | 3,500 | 0 | 1 > |
| B | 3,500 | 0 | 5 |
| C | 350,000 | 2,000 | 100 |
| D | 3,500,000 | 20,000 | 500 |
| Particle concentration | Airborne microbial concentration (CFU/㎥) | |
| Critical Areas | Class 100 | 0.1 |
| Controlled Areas | Class 100,000 | 0.5 |
| Cleanliness Class | FDA | NASA | WHO GMP |
| Particles/㎥ (Particles/ft³) | Particles/㎥ (Particles/ft³) | Particles/㎥ | |
| A 100 | – | – | 1 > |
| B 100 | 3.5 (0.1) | 3.5 (0.1) | 5 |
| C 10,000 | – | 18 (0.5) | 100 |
| D 100,000 | 88 (2.5) | 88 (2.5) | 500 |
| Category | Turbulent Flow | Laminar Flow | ||
| General Type | Vector Type | Vertical Type | Horizontal Type | |
| Diagram |  |  |  |  |
| Features |
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| Cleanliness | Class# 1,000 ~ 100,000 | Class# 1 ~ 100 | Class# 10 ~ 100 | |
| Application | Overall Clean Area | Certain Special Areas | Typical Semiconductor Factories | Operating rooms, Sterile rooms |
| Air Supply Method | Centralized System | Centralized System (Using PAC) | Centralized System (Using FFU) | Centralized System |
| Ventilation Rate (times/h) | 30 ~ 60 | 20 ~ 30 | 200 ~ 600 | 100 ~ 300 |
| Face Velocity | – | – | 0.25 ~ 0.30 | 0.45 ~ 0.50 |
| Supply Air | Filter Outlet | More than 80% of the ceiling | More than 80% of walls | |
| Exhaust Air | Near Floor Level | At least 40% of the floor, lower sections of walls also applicable | At least 40% of the floor, ceiling also applicable | |
| Operating Cost | Low | Low | High | Medium |
| Construction Cost | Low | Medium | High | High |
| Maintenance | Good | Good | Best | Good |
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| Flexibility of Equipment & Layout | Good (Ensure fixed ventilation ducts) | Difficult | Best | Difficult |
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An integrated system that environmentally controls airborne particles, temperature, humidity, illumination, airflow, and air pressure according to relevant regulations.
