Clasificasion Cleanroom

Ultra-clean environments for the biopharma industry

ISO cleanroom classifications

ISO standards for controlled environments Adoption of ISO standards makes national standards such as AS 1386redundant. The ISO standards shown below are complemented by ISO-14698, dealing with bio-contamination control and monitoring. ISO-14644-1 Classification by Airborne Particles ISO-14644-3 Measurement &Testing ISO-14644-5 Cleanroom Operations ISO-14644-7 Separative Enclosures ISO-14644-2 Monitoring for Compliance ISO-14644-4 Design, Construction and Start-up ISO-14644-6 Terms, Definitions & UnitsISO-14644-8 Molecular Contamination

ISO air cleanliness classifications – Class limits (particles/m3) Maximum concentration limits (particles/m3) for particles ≥ particle sizes Classification numbershown 0.3 µm 0.5 µm 1 µm 5 µm (N) 0.1 µm 0.2 µm ISO Class 1 10 2 10 4 ISO Class 2 100 24 102 35 8 ISO Class 3 1000 237 1020 352 83 ISO Class 4 10000 2370 10200 3520 832 29 ISO Class 5 100000 23700102000 35200 8320 293 ISO Class 6 1000000 237000 352000 83200 2930 ISO Class 7 3520000 832000 29300 ISO Class 8 35200000 8320000 293000 ISO Class 9 Note: Uncertainties related to the measurement processrequire that data with no more than three (3) significant figures be used in determining the classification level. EU CGMP classifications Maximum concentration limits (particles/m3) for particles ≥sizes shown Grade At rest (b) In operation ≥ 0.5µm ≥ 5.0µm ≥ 0.5µm ≥ 5.0 µm 3500 0 3500 0 A B (a) 3500 0 350000 2000 C (a) 350000 2000 3500000 20000 D (a) 3500000 20000 not defined (c) not defined (c)Notes:
(a) For B, C and D, the number of air changes should be related to the size of the room and the equipment and personnel present. The HVAC system should be provided with appropriate filters,e.g. HEPA for Grades A, B and C. (b)The maximum permitted number of particles in the "at rest" condition correspond approximately to the US Federal Standard 209E & the ISO classifications as follows:...