15/12/2015What is a Cleanroom? Cleanroom Classifications, Class 1, 10, 100, 1,000, 10,000, 100,000, ISO Standard 14644, Cleanroom Definition Call Toll Free: 800.459.6320 Modular and Load Bearing Custom Built to Your Specifications Clean Air Technology, Inc. Designs, Builds and Installs Cleanrooms Home What is a Cleanroom? Why Use CAT? Industry Applications Over 30 Years Experience 800+ Satisfied Customers Newsletter Archives About Us Contact Us RFQ/RFI Search Modular Hardwall Cleanrooms Modular Dryrooms Modular Softwall Cleanrooms What is a Cleanroom? Cleanroom Overview | Cleanroom Air Flow Principles | Cleanroom Classifications | ISO 146441 Cleanroom Standards BS 5295 Cleanroom Standards (click on thumbnail to enlarge) HVAC, Blower/Fan Systems Cleanroom/Dryroom Consulting Services Products & Features of Our Cleanrooms Cleanroom Planning Guide Custom Designed Cleanroom Cleanroom With Custom Door Option Custom Control Panel For Cleanroom Manufacture Blower For Cleanroom Typically used in manufacturing or scientific research, a cleanroom is a controlled environment that has a low level of pollutants such as dust, airborne microbes, aerosol particles, and chemical vapors. To be exact, a cleanroom has a controlled level of contamination that is specified by the number of particles per cubic meter at a specified particle size. The ambient air outside in a typical city environment contains 35,000,000 particles per cubic meter, 0.5 mm and larger in diameter, corresponding to an ISO 9 cleanroom which is at the lowest level of cleanroom standards. Cleanroom Overview Cleanrooms are used in practically every industry where small particles can adversely affect the manufacturing process. They vary in size and complexity, and are used extensively in industries such as semiconductor manufacturing, pharmaceuticals, biotech, medical device and life sciences, as well as critical process manufacturing common in aerospace, optics, military and Department of Energy. A cleanroom is any given contained space where provisions are made to reduce particulate contamination and control other environmental parameters such as temperature, humidity and pressure. The key component is the High Efficiency Particulate Air (HEPA) filter that is used to trap particles that are 0.3 micron and larger in size. All of the air delivered to a cleanroom passes through HEPA filters, and in some cases where stringent cleanliness performance is necessary, Ultra Low Particulate Air (ULPA) filters are used. Personnel selected to work in cleanrooms undergo extensive training in contamination control theory. They enter and exit the cleanroom through airlocks, air showers and/or gowning rooms, and they must wear special clothing designed to trap contaminants that are naturally generated by skin and the body. ^ Back to top Depending on the room classification or function, personnel gowning may be as limited as lab coats and hairnets, or as extensive as fully enveloped in multiple layered bunny suits with self contained breathing apparatus. Cleanroom clothing is used to prevent substances from being released off the wearer’s body and contaminating the environment. The cleanroom clothing itself must not release particles or fibers to prevent contamination of the environment by personnel. This type of personnel contamination can degrade product performance in the semiconductor and pharmaceutical industries and it can cause cross infection between medical staff and patients in the healthcare industry for example. Cleanroom garments include boots, shoes, aprons, beard covers, bouffant caps, coveralls, face masks, frocks/lab coats, gowns, glove and finger cots, hairnets, hoods, sleeves and shoe covers. The type of cleanroom garments used should reflect the cleanroom and product specifications. Lowlevel cleanrooms may only require special shoes having completely smooth soles that do not track in dust or dirt. However, shoe bottoms must not create slipping hazards since safety always takes precedence. A cleanroom suit is usually required for entering a cleanroom. Class 10,000 cleanrooms may use simple smocks, head covers, and booties. For Class 10 cleanrooms, careful gown wearing procedures with a zipped cover all, boots, gloves and complete respirator enclosure are required. ^ Back to top Cleanroom Air Flow Principles Cleanrooms maintain particulatefree air through the use of either HEPA or ULPA filters employing laminar or turbulent air flow principles. Laminar, or unidirectional, air flow systems direct filtered air downward in a constant stream. Laminar air flow systems are typically employed across 100% of the ceiling to maintain constant, unidirectional flow. Laminar flow criteria is generally stated in portable work stations (LF hoods), and is mandated in ISO1 through ISO4 classified cleanrooms. http://www.cleanairtechnology.com/cleanroomclassificationsclass.php 1/2 The standard also allows interpolation.320 293 Class 1.459. there is no such thing as zero particle concentration.1 µm >=0.000 0 0 Class 2 300. The cleanroom classification standards FS 209E and ISO 146441 require specific particle count measurements and calculations to classify the cleanliness level of a cleanroom or clean area.000 or ISO 9. Class 10000 Cleanrooms.5 µm >=1 µm FED STD 209E equivalent >=5 µm ISO 1 10 2 ISO 2 100 24 10 4 ISO 3 1.000 29. including provisions for adequate. In Federal Standard 209 (A to D) of the USA.15/12/2015 What is a Cleanroom? Cleanroom Classifications.g. British Standard 5295 is used to classify cleanrooms. Cleanroom Contractors.000.700 10.000 293. Class 100000 Cleanrooms.3 µm >=0.000. it requires the use of air returns at the downstream boundary of the process. Canton. Cleanroom Classifications Cleanrooms are classified by how clean the air is. Dry Chambers Modular Softwall Cleanrooms HVAC.com Home What is a Cleanroom? Why Use CAT for Your Cleanroom Build? Industry Applications Newsletter Archives About Us Contact Us RFQ/RFI Modular Hardwall Cleanrooms: Positive Pressure | Negative Pressure Modular Dryrooms.com/cleanroomclassificationsclass. this means the use of low wall air returns around the perimeter of the zone. In horizontal flow applications. which specify the decimal logarithm of the number of particles 0.000 ISO 9 35.000 2. Ordinary room air is approximately class 1.200.000 30 0 Class 3 1.2 µm >=0.000.5mm is measured in one cubic foot of air. Cleanroom Installation http://www. Class 8 Cleanrooms. For that reason.000 2.300 Class 100. Class 9 Cleanrooms. ISO Class 1 Cleanrooms.370 1.000 83.020 352 83 Class 10 ISO 5 100.php 2/2 . The use of ceiling mounted air returns is contradictory to proper cleanroom system design.000 23. Class 2 Cleanrooms. Class 5 Cleanrooms.200 8. Class 1. In vertical flow rooms. for example.000 8.000.000 35.000 ISO 7 352. 100. Both standards classify a cleanroom by the number of particles found in the laboratory's air. MI 48187 USA | Toll Free: 800.000.000 20. 1. In the UK.cleanairtechnology. This standard is about to be superseded by BS EN ISO 146441. Class 10 Cleanrooms.000 237 102 35 8 Class 1 ISO 4 10. Cleanroom Definition Proper cleanroom design encompasses the entire air distribution system.6320 Fax: 734. an ISO class 5 cleanroom has at most 105 = 100.520. The newer standard is TC 209 from the International Standards Organization. the number of particles equal to and greater than 0." Small numbers refer to ISO 146441 standards.320.200 2.000 particles per m³.000. Class 3 Cleanroom. ISO Standard 14644. "class 2000. Inc. This metric nomenclature is also accepted in the most recent 209E version of the Standard.520 832 29 Class 100 ISO 6 1. Cleanroom Manufacturers. Class 4 Cleanrooms.930 Class 10. Both FS 209E and ISO 146441 assume loglog relationships between particle size and particle concentration. downstream air returns.000 4.5 µm >=1 µm >=5 µm >=10 µm >=25 µm Class 1 3.200 3.1 µm or larger permitted per cubic metre of air. so it is possible to describe e. 100.000 832.5 mm or larger permitted per cubic foot of air. Large numbers like "class 100" or "class 1000" refer to FED_STD209E. So. Class 7 Cleanrooms.000 ^ Back to top Clean Air Technology.000 Room Air BS 5295 Cleanroom Standards maximum particles/m3 Class >=0.000 102.9437 | Email:
[email protected] 300 Class 4 20. Softwall Cleanrooms.459. 10.000 ISO 8 3. Hardwall Cleanrooms.000 40. ^ Back to top ISO 146441 Cleanroom Standards maximum particles/m3 Class >=0. and this count is used to classify the cleanroom.000 4. and denote the number of particles of size 0. Federal Standard 209E is used domestically. Cleanrooms are classified according to the number and size of particles permitted per volume of air. Blower/Fan Systems Cleanroom/Dryroom Consulting Services Products & Features of Our Cleanrooms Types of Cleanrooms by Clean Air Technology and Expertise: Cleanroom Designers. 10. Class 6 Cleanroom. 41105 Capital Drive.000 237.