National Committee for Quality Management
Product Quality Principles
Requirements and use
Product quality is assessed against requirements and intended use. A statement about one characteristic should not be extended to every aspect of performance.
Specifications
Identify the product, configuration, conditions and acceptance requirements. Ambiguous terms can produce disagreement even when test results are accurate.
Test information
Read the method, sample identity, dates, units and conditions together. A report's relevance depends on the relationship between its tested sample and the product under consideration.
Claims
A claim should be precise enough for its supporting evidence to be examined. Distinguish measured results, manufacturer declarations and independently assessed conclusions.
Sources
Identify the laboratory, report issuer and standards publisher accurately. Their respective roles should not be merged into a general statement of endorsement.
Changes and applicability
A different configuration or production change may affect the relevance of earlier evidence. Examine the relationship before carrying forward a claim.
Consumer information
Information should explain what a claim means in ordinary use and where qualifications matter. Explore consumer information.
Resources and discussion
Read the testing glossary or propose a technical topic. This program develops professional understanding of requirements, evidence and communication.