GSO ISO 29201:2013由GSO 发布于 2013-12-31。
GSO ISO 29201:2013在国际标准分类中归属于: 13.060.70 水的生物学特性的检验。
GSO ISO 29201:2013 水质微生物计数方法测定结果的变异性和测量的不确定度的最新版本是哪一版?
最新版本是 GSO ISO 29201:2013 。
This International Standard gives guidelines for the evaluation of uncertainty in quantitative microbiological analyses based on enumeration of microbial particles by culture. It covers all variants of colony count methods and most probable number estimates. Two approaches, the component (also known as bottom-up or step-by-step) and a modified global (top-down) approach are included. The aim is to specify how values of intralaboratory operational variability and combined uncertainty for final test results can be obtained. The procedures are not applicable to methods other than enumeration methods. NOTE 1 Most annexes are normative. However, only the annexes relevant to each case are to be applied. If the choice is the global approach, then all normative annexes that belong to the component approach can be skipped and vice versa. NOTE 2 Pre-analytical sampling variance at the source is outside the scope of this International Standard, but needs to be addressed in sampling designs and monitoring programmes. NOTE 3 The doubt or uncertainty of decisions based on the use of analytical results whose uncertainty has been estimated is outside the scope of this International Standard. NOTE 4 The extra-analytical variations observed in proficiency tests and intercalibration schemes are also not detailed in this International Standard, but it is necessary to take them into consideration in analytical control. The use of intercalibration data in uncertainty estimation offers the possibility for the bias between laboratories to be included (Nordtest Report TR 537[12]).
菌落计数法测定细菌总数,是基于对平板上菌落的观察和计数结果,主要依赖操作人员的判断,因此总是会增加或降低检测结果的不确定度;而TEMPO/TVC法由仪器进行自动的读数,也会因固有设置而产生测量不确定度。本文对两种方法就单一样品重复测量的不确定度进行了评定。...
结论 在规定了测量过程和分析样品类型时,不确定度能反映多种因素对检测结果的影响,不确定度能适用于该项目的测量值,有利于实验室问结果的可比性。 血小板计数(BPC)是临床最常用的血细胞检测指标之一,根据国际血液学标准化委员会(ICSH)的要求,血细胞计数结果应溯源到参考方法,才能保证结果准确性。...
不确定度分析评定工作是水质检测结果数据分析和质量控制的重要组成部分,也是提高测量结果准确度的重要方法之一。电感耦合等离子体质谱仪具有低检出限、高灵敏度的特点,所以,对其进行水质分析检测的不确定度评定尤为重要。 ...
测量不确定度是对测量结果质量和水平的科学表达,测量不确定度评定能决定测量结果的置信度和置信区间,可以通过分析每个不确定度分量的大小,来确定检测环节中影响不确定度的主次,提高检测水平。不确定度评定[1]程序在CNAL认可的检测实验室必须建立测量。...
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