浊度计量比对样品的研制

Development of Comparison Samples for Turbidity

按照国际标准要求制备了浊度计量比对样品,其标称值可以溯源至国家一级标准物质,不确定度U=3.2%(k=2),样品均匀性好,在150 d内保持量值稳定。经过实际比对验证,比对样品各项特性满足计量比对工作需求,可应用于浊度计的仪器校准、浊度测量结果的质量控制、浊度计量标准的比对和能力验证、期间核查等方面。

Based on the requirements of international standards,the comparison sample for turbidity was prepared.Its nominal value can be traced back to the national first-class reference material,and the uncertainty U=3.2%(k=2).The sample has good homogeneity and can keep the value stable within 150 days.After verification by practical comparison,the characteristics of the comparison samples meet the requirements of measurement comparison,and can be used for calibrate the turbid meters,quality control of turbidity measurement results,comparison and capability verification of turbidity measurement standards,and intermediate check.