Stears J G, Gray J E, Winkler N T
Radiol Technol. 1979 May-Jun;50(6):657-63.
Sensitometry and pH values of the developer solution were compared in controlled over-replenishment, developer depletion, fixer contamination experiments, and on a daily quality control basis. The purpose of these comparisons was to evaluate the potential of pH monitoring as a method of processor control, or a supplement to sensitometry as a method of quality control. Reasonable correlation was found between pH values and film density in two of the three experiments but little or no correlation was found in the third experiment and on a day-to-day basis. The conclusion drawn from these comparisons is that pH monitoring has several limitations which render it unsuitable as a method of daily processor quality control as either a primary or supplementary technique. Sensitometry takes into account all the variables encountered in film processing and is the clear method of choice for processor quality control.
在控制过补充、显影剂耗尽、定影剂污染实验以及日常质量控制的基础上，对显影剂溶液的感光度测定和pH值进行了比较。这些比较的目的是评估pH监测作为一种冲洗机控制方法的潜力，或者作为感光度测定法这种质量控制方法的补充。在三个实验中的两个实验里，发现pH值与胶片密度之间存在合理的相关性，但在第三个实验以及日常情况下，几乎没有发现相关性。从这些比较中得出的结论是，pH监测存在若干局限性，这使得它不适合作为冲洗机日常质量控制的主要或补充技术。感光度测定考虑了胶片冲洗过程中遇到的所有变量，显然是冲洗机质量控制的首选方法。
