Clean room maintained virtually free of contaminants, such as dust or bacteria, are used in laboratory work and in theproduction of precision parts for electronic or aerospace equipment. In the clean room standard ISO 14644-1 "Classification of Air Cleanliness" the classes are based on the formula Cn = 10N (0.1 / D)2.08 where Cn = maximum permitted number of particles per cubic meter equal to or greater than the specified particle size, rounded to whole number N = is the ISO class number, which must be a multiple of 0.1 and be 9 or less D = is the particle size in micrometers (1) Maximum Number of Particles in Air (particles in each cubic meter equal to or greater than the specified size) ISO Class Particle size > 0.1 m > 0.2 m > 0.3 m > 0.5 m >1 m >5 m ISO Class 1 10 2 4 ISO Class 2 ISO Class 3 ISO Class 4 ISO Class 5 ISO Class 6 ISO Class 7 ISO Class 8 ISO Class 9 100 1000 10,000 100,000 1,000,000 24 237 2,370 23,700 237,000 10 102 1,020 10,200 102,000 35 352 3,520 35,200 352,000 3,520,000 35,200,000 8 83 832 8,320 83,200 832,000 8,320,000 29 293 2930 29,300 293,000 ISO Cleanroom Standards y y y y y y y y y y y ISO-14644-1 Classification of Air Cleanliness ISO-14644-2 Cleanroom Testing for Compliance ISO-14644-3 Methods for Evaluating & Measuring Cleanrooms & Associated Controlled Environment ISO-14644-4 Cleanroom Design & Construction ISO-14644-5 Cleanroom Operations ISO-14644-6 Terms, Definitions & Units ISO-14644-7 Enhanced Clean Devices ISO-14644-8 Molecular Contamination ISO-14698-1 Biocontamination: Control General Principles ISO-14698-2 Biocontamination: Evaluation & Interpretation of Data ISO-14698-3 Biocontamination: Methodology for Measuring Efficiency of Cleaning Inert Surfaces Sterile Environment Technologies practices proper procedures to Decontaminate your Cleanroom, Data Center, and other critical environments. ISO 14644 Standards can be found through IEST, the Secretariat of ISO/TC209. Data Centers What is Federal Standard 209e for Data Centers? The outmoded (replaced by ISO 14644) benchmark for optimum and safe operating levels is compared to Federal Standard 209e for Data Centers at 100,000 particles at .5 microns per cubic foot of air space. Optimum levels for temperature should normally be 70 to 72 degrees Fahrenheit, with humidity levels at 50%. Please note: equipment manufacturers have varying optimum operating levels. Notice: Federal Standard 209E has been replaced with ISO Standard 14644. The first subsection in ISO 14644 (ISO STND. 14644-1) has some unique changes from the old Federal Standard - however they are very similar. This standard is now in effect for critical environments (Cleanrooms, Data Centers, etc.) worldwide. Some companies have been successful with the federal Standard 209E, and may not have switched over yet. It is important for these companies to know the main differences are easy to implement and may not be a costly change. The main differences between Federal Standard 209E and ISO 14644-1 (Testing Standards) are: y y y ISO Establishes 0.1um as the "Standard" Diameter ISO Creates 3 New Cleanliness Classeso 2 "Cleaner" classes (ISO class 1 and ISO class 2) than Federal Standard 209E o 1 "Dirtier" Class (ISO Class 9) which is allows more particulate than Fed Standard 209E class 100,000 Allows for discarding of "Outliers" - Federal Standard 209E did not. International Standards for Cleanrooms and Critical Environments International Cleanroom Standards: ISO/TC209 has proposed ten (10) documents which will make up the cleanroom standards. These documents are in their final voting stages and can be legally used in trade. The tables and sections below outline the first seven of these documents in order. ISO-14644-1 Classification of Air Cleanliness Cleanliness class designations and quantity have changed from FS209E (see Table 1). Along with the obvious change to metric measure of air volume, ISO 14644-1 adds three additional classes. (Table 1) Airborne Particulate Cleanliness Classes (same as table above) Number of Particles per Cubic Meter by Micrometer Size Class 0.1 um ISO 1 ISO 2 10 0.2 um 0.3 um 2 0.5 um 1 um 5 um 100 24 10 4 ISO 3 ISO 4 ISO 5 ISO 6 ISO 7 ISO 8 ISO 9 1,000 237 102 35 8 10,000 2,370 1,020 352 83 100,000 23,700 10,200 3,520 832 29 1,000,000 237,000 102,000 35,200 8,320 293 352,000 83,200 2,930 3,520,000 832,000 29,300 35,200,000 8,320,000 293,000 (Table 2) Comparing FED STD 209E to the new ISO 14644-1. ISO 14644-1 1 2 3 FED STD 209E 1 M1.5 10 M2.5 100 M3.5 1,000 M4.5 10,000 M5.5 100,000 M6.5 Airborne Particulate Cleanliness Class Comparison 4 5 6 7 8 9 ISO-14644-2 Cleanroom Testing for Compliance This document determines the type and frequency of testing required to conform with the standard. Strategic Testing: (Table 1) Schedule of Tests to Demonstrate Continuing Compliance. Test Parameter Class < or = ISO 5 Maximum Time Interval 6 Months 12 Months 12 Months Test Procedure ISO 14644-1 Annex A ISO 14644-1 Annex B5 ISO 14644-1 Annex B4 Particle Count Test > ISO 5 Air Pressure Difference All Classes Airflow All Classes 12 Months Strategic Testing: (Table 2) Schedule of Additional Optional Tests. Test Parameter Class Maximum Time Interval 24 Months Test Procedure ISO 14644-3 Annex B6 ISO 14644-3 Annex B4 ISO 14644-3 Annex B13 ISO 14644-3 Annex B7 Installed Filter Leakage All Classes Containment Leakage All Classes 24 Months Recovery All Classes 24 Months Airflow Visualization All Classes 24 Months ISO-14644-4 Cleanroom Design & Construction This document will be a primer on the design and construction of cleanrooms. It will cover all aspects of the process from design development to startup and commissioning. ISO-14644-5 Cleanroom Operations This document will be an introduction on cleanroom operation. It will cover all aspects of the operation of a cleanroom including entry and exit procedures for equipment and personnel, education and training, cleanroom apparel, and facility issues such as maintenance, housekeeping, monitoring, system failure, etc. ISO-14644-6 Terms, Definitions & Units This document will provide a consistent reference for all terms, definitions and units discussed across all ISO cleanroom standards. ISO-14644-7 Minienvironments & Isolators This document will focus on specialized stand-alone clean spaces including their design, construction, and operations. Home | Contact Us | Disaster Recovery | Data Center Cleaning | Cleanroom Cleaning | Sub Floor Services | Products | Company