Final answer:
The JSLIST is effective for up to 24 hours after exposure to a chemical agent, but immediate replacement is necessary when exposed to nerve agents for continued protection.
Step-by-step explanation:
When exposed to a chemical agent, the Joint Service Lightweight Integrated Suit Technology (JSLIST) is good for a maximum of 24 hours of wear. Nerve agent exposure requires that the suit be changed immediately to ensure continued protection for the individual, as contamination can present severe health risks such as miosis, dizziness, and respiratory distress.
Poison gases like mustard gas used in trench warfare during World War I were known to cause lasting and severe health effects, leading to the development of modern protective gear like the JSLIST. Design improvements in chemical protection gear are continuously made to safeguard against the lethal effects of exposure to chemical warfare agents.