What color does M9 paper turn when it contacts contamination?

M9 paper is a specific type of strip used by military personnel to detect the presence of chemical agents. When M9 paper comes into contact with a chemical contaminant, it undergoes a color change that indicates the level of contamination. The correct response indicates that M9 paper turns a light pink or reddish-brown color upon exposure to these agents. This color change is critical for personnel as it provides a visible and easily recognizable signal that there may be a hazardous environment, allowing for timely protective measures.

The reaction of M9 paper to contaminants helps maintain the safety of troops in the field, ensuring they can take appropriate actions to protect themselves from potential chemical exposures. This clear and distinct color change is a key feature of M9 paper's functionality in chemical detection.