What color does M-8 paper turn when exposed to an H type blister agent?

When M-8 paper comes into contact with an H type blister agent, it turns red. M-8 paper is a chemical agent detection paper used by various military personnel to identify the presence of specific chemical warfare agents on surfaces. Each type of chemical agent has a designated color change that indicates its presence.

For blister agents, specifically, the H type (such as sulfur mustard), the reaction results in a red coloration. This distinct color change enables personnel to quickly assess and respond to potential chemical threats. Knowing this information is crucial for individuals in combat or hazardous environments, as it helps ensure safety measures are implemented promptly while minimizing exposure to harmful agents.