The fixing chemical commonly used in radiography is

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Prepare for the VetSkill Level 3 Diploma VN02 – Diagnostic Principles Test. Engage with multiple-choice questions, hints, and explanations. Achieve your certification!

Multiple Choice

The fixing chemical commonly used in radiography is

Explanation:
In radiography, fixing removes unexposed silver halide from the film emulsion to lock in the image. The chemical that does this best is sodium thiosulfate, which dissolves the unexposed silver halide as a soluble thiosulfate complex, leaving the developed image intact and stable when washed and dried. Sodium sulfite is typically included in fixers as a preservative to prevent thiosulfate oxidation and reduce fog, but it is not the primary fixing agent. Sodium bicarbonate is mainly a buffering or pH-adjusting agent in other solutions, not a fixer, and hydrochloric acid would damage the emulsion rather than fix it.

In radiography, fixing removes unexposed silver halide from the film emulsion to lock in the image. The chemical that does this best is sodium thiosulfate, which dissolves the unexposed silver halide as a soluble thiosulfate complex, leaving the developed image intact and stable when washed and dried. Sodium sulfite is typically included in fixers as a preservative to prevent thiosulfate oxidation and reduce fog, but it is not the primary fixing agent. Sodium bicarbonate is mainly a buffering or pH-adjusting agent in other solutions, not a fixer, and hydrochloric acid would damage the emulsion rather than fix it.

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