Eyewash

Eyewash refers to devices and systems used to rinse the eyes to remove foreign particles or chemical splashes. It is a first aid measure used in workplaces, laboratories, healthcare facilities, and homes. Eyewash equipment includes eyewash stations—often wall-mounted units with dual nozzles that deliver a continuous flow of water to both eyes—and portable eyewash bottles containing sterile saline or buffered solutions. Some installations combine an eyewash with a manually activated shower for full body exposure.

Most modern eyewash devices are designed to meet or exceed standards such as ANSI Z358.1, which specify performance criteria including flow rate, water temperature, accessibility, and a recommended flush duration of at least 15 minutes. The rinsing solution is typically sterile saline (0.9% NaCl) or other approved isotonic or buffered eyewash fluids; when unavailable, clean potable water may be used. Solutions should be maintained and replaced according to manufacturer guidance and local regulations.

Proper use: In the event of exposure, begin rinsing immediately at the nearest eyewash station or with bottled solution. Hold the eyelids apart with your fingers to ensure the entire surface is washed, and angle the eyes away from the nose to maximize coverage. For chemical exposures, flush for at least 15 minutes, remove contact lenses if easy to do, seek medical evaluation afterward. For minor particles, continue rinsing until the sensation of irritation subsides.

Maintenance: Regular testing and inspection are required; units should be readily accessible, clearly labeled, and temperature-controlled to prevent cold or hot water injuries.