美国国家标准与技术研究所NIST
NIST supports accurate and compatible measurements by certifying and providing over 1300 Standard Reference Materials® with well-characterized composition or properties, or both. These materials are used to perform instrument calibrations in units as part of overall quality assurance programs, to verify the accuracy of specific measurements and to support the development of new measurement methods.
NIST通过认证和提供1300多种成分或财产特征良好的标准参考材料®，或两者兼而有之，支持准确和兼容的测量。这些材料用于作为整体质量保证计划的一部分，以单位进行仪器校准，以验证特定测量的准确性，并支持新测量方法的开发。
Industry, academia, and government use NIST SRMs to facilitate commerce and trade and to advance research and development. Presently NIST SRMs are currently available for use in areas such as industrial materials production and analysis, environmental analysis, health measurements and basic measurements in science and metrology. NIST SRMs are also one mechanism for supporting measurement traceability in the United States.
工业界、学术界和政府使用NIST SRM促进商业和贸易，促进研究和开发。目前，NIST SRM可用于工业材料生产和分析、环境分析、健康测量以及科学和计量基础测量等领域。NIST SRM也是支持美国测量可追溯性的一种机制。
Each NIST Standard Reference Material® is supplied with a Certificate of Analysis and a Materials Safety Data Sheet, when applicable. In addition, NIST has published many articles and practice guides that describe the development, analysis and use of SRMs.
每个NIST标准参考材料®均附有分析证书和材料安全数据表（如适用）。此外，NIST还发布了许多文章和实践指南，描述了SRM的开发、分析和使用。 美国国家标准与技术研究所NIST
The SRM Program references a number of definitions in connection with the production, certification, and use of its SRMs and RMs. Certain definitions, adopted for SRM use, are derived from international guides and standards on reference materials and measurements while others have been developed by the SRM Program to describe those activities unique to NIST operations.
SRM计划参考了与其SRM和RM的生产、认证和使用相关的许多定义。SRM使用的某些定义来源于参考材料和测量的国际指南和标准，而SRM计划制定的其他定义则描述了NIST操作特有的活动。
An NTRM (NIST Traceable Reference Material) is a commercially produced reference material with a well-defined traceability linkage to existing NIST standards. This traceability linkage is established via criteria and protocols defined by NIST. Commercial reference materials producers may affix the NTRM trademark to materials produced according to these criteria and protocols.
NTRM（NIST可追溯参考材料）是一种商业生产的参考材料，与现有NIST标准具有明确的可追溯性联系。这种可追溯性联系是通过NIST定义的标准和协议建立的。商业参考材料生产商可在根据这些标准和协议生产的材料上贴上NTRM商标。