Which liquid solution is included in the first aid kit?

• A. Alcohol wipes
• B. Hydrogen peroxide
• C. Aloe vera gel
• D. Sterile water/saline solution

Answer: (D)

Cleaning a wound with a sterile liquid is essential in first aid to remove dirt, debris, and bacteria without causing further tissue damage. Sterile water or saline solution is designed for wound irrigation: it’s sterile and isotonic, so it cleans effectively while being gentle on tissues and reducing the risk of irritation or osmotic injury. This makes it the standard liquid for initial wound care in many first aid kits.

Alcohol wipes, while useful for surface skin antisepsis, can sting open wounds and irritate tissue, which can slow healing. Hydrogen peroxide can disrupt healing by damaging healthy cells if used on wounds. Aloe vera gel is soothing and may provide moisture, but it isn’t a sterile irrigation solution and isn’t suitable for cleaning a fresh wound in a first-aid context.