由于传统的jar试验对确定低浊度水的最佳混凝剂剂量无效，因此，由于缺乏确定混凝剂剂量的简单台架试验，采用此类水快速过滤的公用事业公司可能无法最大限度地提高处理效率。使用对水处理厂操作员有用的术语，本文描述了一个简单的实验室规模程序，用于确定浊度水平为1 ntu或更低的原水供应的混凝剂剂量。作者解释了他们的过滤测试方案，并提供了关于测试有效性的文件。包括15个参考文献、表格和图表。

Because the conventional jar test is ineffective for determining optimal coagulant dosages for low turbidity waters, utilities employing rapid-rate filtration of such waters may fail to maximize treatment efficiency for lack of a simple bench-scale test for determining coagulant dosage. Using terms useful to water treatment plant operators, this article describes a simple bench-scale procedure for determining coagulant dosages for raw water supplies with turbidity levels of 1 ntu or less. The authors explain the protocol for their jarfiltration test and present documentation on test validity. Includes 15 references, table, figures.