Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Clean Rooms - ISO Standard 14644

Clean room class limits according ISO Standard 14644-1.

Sponsored Links

Clean rooms maintained virtually free of contaminants, such as dust or bacteria, are used in laboratory work and in the production of precision parts for electronics or aerospace equipment.

In the clean room standard ISO 14644-1 "Classification of Air Cleanliness" - the classes are based on the equation

Cn = 10N (0.1 / D)2.08                                     (1)

where

Cn = maximum permitted number of particles per cubic meter equal to or greater than the specified particle size, rounded to whole number

N = ISO class number - must be a multiple of 0.1 and be 9 or less

D = particle size in micrometers

ISO
Class
Maximum Number of Particles in Air
(particles in each cubic meter equal to or greater than the specified size)
Particle size
> 0.1 μm> 0.2 μm> 0.3 μm> 0.5 μm> 1 μm> 5 μm
ISO Class 1 10 2
ISO Class 2 100 24 10

4

ISO Class 3 1000 237 102 35 8
ISO Class 4 10000 2370 1020 352 83
ISO Class 5 100000 23700 10200 3520 832 29
ISO Class 6 1000000 237000 102000 35200 8320 293
ISO Class 7 352000 83200 2930
ISO Class 8 3520000 832000 29300
ISO Class 9 35200000 8320000 293000

clean room particles sizes iso standard diagram

ISO Clean room Standards

  • ISO-14644-1 Classification of Air Cleanliness
  • ISO-14644-2 Clean room Testing for Compliance
  • ISO-14644-3 Methods for Evaluating & Measuring Clean rooms & Associated Controlled Environment
  • ISO-14644-4 Clean room Design & Construction
  • ISO-14644-5 Clean room 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
Sponsored Links

Related Topics

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate
About the Engineering ToolBox!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Citation

This page can be cited as

  • Engineering ToolBox, (2005). Clean Rooms - ISO Standard 14644. [online] Available at: https://www.engineeringtoolbox.com/clean-rooms-iso-d_933.html [Accessed Day Mo. Year].

Modify access date.

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

3 10

Sponsored Links
.