Fischer P, Thofern E
Zentralbl Bakteriol Orig B. 1977 Dec;165(5-6):517-26.
The examination of the physical properties of the instrument showed several possibilities of meter-error mainly due to constructive disadvantages. After having found this a special experimental arrangement was worked out to exclude errors. Then good linear correlations of the meter-reading and the analytical DPD-Method for free Chlorine were found for pH-values ranging from 3.7 to 11. Further the results of a test under practical conditions in a swimming pool are shown and the possibility to discriminate different types of waters by their chlorine demand under constant-titration.
对该仪器物理特性的检测表明，主要由于结构缺陷，存在几种仪表误差的可能性。发现这一情况后，设计了一种特殊的实验装置以排除误差。然后，发现对于pH值在3.7至11范围内，仪表读数与游离氯的分析DPD方法之间具有良好的线性相关性。此外，还展示了在游泳池实际条件下的测试结果，以及在恒定量滴定条件下通过氯需求量区分不同类型水的可能性。
