ASNT Radiographic Testing Practice Test 2026 – Comprehensive All-in-One Guide for Exam Success!

In film radiography, pentrameters are typically placed on the source side of the test object. The purpose of a pentrameter is to provide a means of measuring the sensitivity of the radiographic film to the radiation being used, allowing for proper evaluation of the exposure conditions.

Placement on the source side ensures that the pentrameter provides a representative indication of the radiation dose that the film receives. By being positioned where the radiation originates, pentrameters can effectively assess how varying exposure times and distances affect the resultant image quality and film response. This information is crucial for ensuring that the image produced is of sufficient quality to detect any potential flaws in the test object.

In contrast, placing the pentrameter on the film side would not accurately measure the incoming radiation exposure that impacts the film, while placing it in the processing solution would not contribute to measuring the initial radiation effects. Thus, the correct positioning is essential for reliable and effective radiographic testing.