What is the purpose of inspecting a recovered agent in a dry chemical closed recovery system?

Inspecting a recovered agent in a dry chemical closed recovery system primarily aims to check for foreign materials. This step is crucial because the integrity of the dry chemical agent must be maintained to ensure that it functions effectively when needed. If foreign materials are present, they could compromise the performance of the extinguisher, leading to potential failure during a fire emergency. Ensuring the agent is free of contaminants plays a vital role in safety and compliance with fire safety standards.

While aspects like the color of the agent, its completeness, and verifying that it contains solely dry chemicals are relevant, they do not directly address the critical concern of foreign contaminant presence, which can significantly impact the efficacy of the fire suppression system.