1.1 该软件的开发是为了在三个ASTM标准中实现计算自动化:实践 D2777 （异常值消除部分）， D6091 和 D6512 . 1.2 该程序计算[实验室间或内部]标准差（ILSD）随浓度变化的常数、直线、指数和混合（Roke-Lorenzato）模型的检测估计（DE）和定量估计（QE）。计算结果显示在DE_QE工作表中，结果显示在DLs&QLs工作表中。生成了几个图，显示每个模型与数据的拟合程度。 ASTM标准必须使用最简单的模型来拟合具有足够置信度的数据。 注1: 在这种实践中以及使用该软件的自动化建模技术已被证明适用于大多数数据集。该软件的用户应注意，对于一些罕见的数据集，可能会获得异常结果，并且可能需要手动强制不同的模型。已经注意到，对于某些数据集，当选择指数模型时，可能对结果缺乏收敛性，或者可能对两个单独的结果存在收敛性。 1.3 DQCALC的用户应参考实践 D2777 , D6091 和 D6512 了解实践范围和应用的具体信息。 1.4 IDE实践( D6091 )和IQE实践( D6512 )涉及基于实验室间数据的检测限和定量限估计。DQCALC也可用于基于单个实验室数据计算检测和定量估计。 1.5 DQCALC软件由Microsoft Excel组成 3. Microsoft Word中的工作簿电子表格和相关宏以及用户手册。 3

1.1 This software was developed to automate calculations within three ASTM standards: Practices D2777 (outlier removal section), D6091 , and D6512 . 1.2 The program calculates detection estimates (DE) and quantitation estimates (QE) for the constant, straight-line, exponential, and hybrid (Rocke-Lorenzato) models of the variation of [inter or intra] laboratory standard deviation (ILSD) with concentration. Calculations are shown in the DE_QE worksheet and results are shown in the DLs & QLs worksheet. Several plots are generated showing how well each model fits the data. The least complex model to fit the data with adequate confidence must be used by the ASTM standards. Note 1: Modeling techniques automated in this practice and with this software have been shown to work well with most data sets. Users of this software are cautioned that with some, rare data sets, anomalous results may be obtained, and manual forcing of a different model may be required. It has been noted that for some data sets when an exponential model is selected, there may be a lack of convergence on a result or there may be a convergence on two separate results. 1.3 Users of DQCALC should refer to Practices D2777 , D6091 , and D6512 for the specifics of the scope and application of the Practices. 1.4 The IDE Practice ( D6091 ) and the IQE Practice ( D6512 ) are concerned with estimates of limits of detection and limits of quantitation based on inter-laboratory data. DQCALC may also be employed to calculate detection and quantitation estimates based on single laboratory data. 1.5 The DQCALC Software consists of a Microsoft Excel 3 workbook spreadsheet and associated macros and a user manual in Microsoft Word. 3