Chemical safety

Use diluted bleach within 24 hours

Prepare only what is needed, identify the container, use it with ventilation, and discard after 24 hours. Rinse disinfected objects with water where CHP guidance requires it.

High-priority reminder

Last reviewed: 2026-08-22

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Unsafe: Keeping an undated diluted bleach solution for several days. Prepare only what is needed, identify the container, use it with ventilation, and discard after 24 hours. Rinse disinfected objects with water where CHP guidance requires it.

Why it matters

Diluted bleach loses effectiveness over time and poor handling increases exposure risk.

Wrong action

Unsafe: Keeping an undated diluted bleach solution for several days.

Correct action

Prepare only what is needed, identify the container, use it with ventilation, and discard after 24 hours. Rinse disinfected objects with water where CHP guidance requires it.

What to do

Check the area, equipment, and household arrangement before starting.
Prepare only what is needed, identify the container, use it with ventilation, and discard after 24 hours. Rinse disinfected objects with water where CHP guidance requires it.
Stop and tell the employer if the situation is unsafe or unclear.