What color is the filter on a field protective mask?

The filter on a field protective mask is typically green, which is designed to indicate that it provides protection against certain types of chemical and biological threats. The color coding aids users in quickly identifying the filter's purpose and ensuring that they are equipped with the correct protective gear for their operational needs. Green filters specifically denote a level of filtration that is suitable for various hazardous environments encountered in combat and field operations, emphasizing the importance of proper identification and usage for the safety of personnel.