If readings vary considerably but do center about the true value- accurate but imprecise
Test results should be both precise and accurate!
1.2 Standard Specifications & Standardizing Agencies
Specification: A precise statement of a set of requirements, to be satisfied by a material, product, system or service. It is desirable that the requirements, together with their limits, should be expressed numerically in appropriate units.
A standard specification for a material is the result of agreement between those concerned in a particular field and involves acceptance for use by participating agencies.
Standardizing Agencies & Relevant Standards
Turkish Standards Institute (TSE)-Turkish Standards (TS) http://www.tse.org.tr/
American Society for Testing and Materials (ASTM)- ASTM Specifications http://www.astm.org
International Standards Organization (ISO)- ISO Standards http://www.iso.org
European Commitee for Standardization (CEN)- European Norms (EN) http://www.cen.eu