Quality Characteristic in ISO 9000

Any feature or characteristic of a product or service that is needed to satisfy
customer needs or achieve fitness for use is a quality characteristic. When
dealing with products the characteristics are almost always technical character-
istics, whereas service quality characteristics have a human dimension. Some
typical quality characteristics are given below.

Product characteristics
1. Accessibility Functionality Size
2. Availability Interchangeability Susceptibility
3. Appearance Maintainability Storability
4. Adaptability Odour – Strength
5. Cleanliness Operability -Taste
6. Consumption Portability – Testability
7. Durability Producibility Traceability
8. Disposability Reliability – Toxicity
9. Emittance Reparability Transportability
10. Flammability Safety – Vulnerability
11. Flexibility Security – Weight

Service quality characteristics
1. Accessibility Credibility – Honesty
2. Accuracy Dependability Promptness
3. Courtesy Efficiency – Responsiveness
4. Comfort Effectiveness Reliability
5. Competence Flexibility – Security

These are the characteristics that need to be specified and their achievement
controlled, assured, improved, managed and demonstrated. These are the
characteristics that form the subject matter of the product requirements
referred to in ISO 9000. When the value of these characteristics is quantified or
qualified they are termed product requirements. We used to use the term quality
requirements but this caused a division in thinking that resulted in people
regarding quality requirements as the domain of the quality personnel and
technical requirements being the domain of the technical personnel. All
requirements are quality requirements – they express needs or expectations that
are intended to be fulfilled by a process output that possesses inherent
characteristics. We can therefore drop the word quality. If a modifying word is
needed in front of the word requirements it should be a word that signifies the
subject of the requirements. Transportation system requirements would be
requirements for a transportation system, Audio speaker design requirements
would be requirements for the design of an audio speaker, component test
requirements would be requirements for testing components, and management
training requirements would be requirements for training managers. ISO 9000
requirements are often referred to as quality requirements as distinct from other
types of requirements but this is misleading. ISO 9000 is no more a quality
requirement than is ISO 1000 on SI units, ISO 2365 for Ammonium nitrate or
ISO 246 for Rolling Bearings. The requirements of ISO 9000 are quality
management system requirements – requirements for a quality management
system.