ISO 14644 specifies test methods for designated classification of airborne particulate of cleanliness and for characterizing the performance of cleanrooms and clean zones. Performance tests are specified for two types of cleanrooms and clean zones: those with unidirectional flow and those with non-unidirectional flow, in three possible occupancy states: as-built, at-rest and operational. The test methods recommend test apparatus and test procedures for determining performance parameters. Where the test method is affected by the type of cleanroom or clean zone, alternative procedures are suggested. For some of the tests, several different methods and apparatus are recommended to accommodate different end-use considerations.

The test procedures described in this part of ISO 14644 may be used for demonstrating compliance with the performance criteria of a user-specified installation and for performing periodic testing. The choice of tests may be based in part on factors such as the design of the installation, operational states and the required level of certification.

The sequence of tests should be determined beforehand between customer and supplier, and should be such as to minimize wasted effort in the event of non-compliance.

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The Testing Commissioning and Validatation test as follows:​​

• Air Velocity

• Filter Integrity

• Non Viable Particle count

• Recovery

• Air Flow Pattern Test 

• Temperature and Humidity

• Diffrential test 

• Sound Level Test

• Light Intensity TesT

• Documentation like DQ, IQ, OQ and PQ with Test Reports as per ISO guidelines and Material Test certificates, Calibration certificates of instruments like Magnehelic gauges, Sensors, etc.

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Note: All the test results should meets the Design and Standards