Understanding NRT- Reading 1- 2 of 2- Radiogaphic Testing A
Understanding nrt reading 1- 2 of 2- radiogaphic testing a
Understanding nrt reading 1- 2 of 2- radiogaphic testing a
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Automatic Processor Evaluation<br />
The automatic processor is the essential piece <strong>of</strong> equipment in every x-ray<br />
department. The automatic processor will reduce film processing time when<br />
compared to manual development by a factor <strong>of</strong> four. To monitor the<br />
performance <strong>of</strong> a processor, apart from optimum temperature and mechanical<br />
checks, chemical and sensitometric checks should be performed for<br />
developer and fixer. Chemical checks involve measurement <strong>of</strong> pH values for<br />
developer and replenisher, fixer and replenisher, measurement <strong>of</strong> specific<br />
gravity and fixer silver levels. Ideally pH should be measured daily and it is<br />
important to record these measurements, as regular logging provides very<br />
useful information. The daily measurements <strong>of</strong> pH values for developer and<br />
fixer can then be plotted to observe the trend <strong>of</strong> variations in these values<br />
compared to normal pH operating levels to identify problems.<br />
Charlie Chong/ Fion Zhang
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