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ISO 9001, ISO 9002 and ISO 9003 are
the three standards against which a quality system can be audited
and certified. ISO 9001 certification of a quality system does not
signify a higher level of quality than ISO 9002 certification, and
the latter is not "better", or of a higher quality ranking than ISO
9003 certification. So, an
organization chooses that its quality system be certified against
ISO 9001, ISO 9002, or ISO 9003 according to the business processes
covered by the quality system. Advertisements which imply a quality
ranking between the three standards are misleading and should be
avoided.
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The three
standards differ in their scopes:
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ISO
9001 sets out the requirements for an organization whose
business processes range all the way from design and
development, to production, installation and servicing.
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For
an organization which does not carry out design and development,
ISO 9002 is the appropriate standard since it does not include
the design control requirements of ISO 9001 - otherwise, its
requirements are identical.
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ISO
9003 is the appropriate standard for an organization whose
business processes do not include design control, process
control, purchasing or servicing, and which basically uses
inspection and testing to ensure that final products and
services meet specified requirements.
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