All of the following are precautions to take when using chemical disinfectants except:

• A. Store disinfectants in tightly sealed containers away from heat sources.
• B. Ensure good ventilation in the area where disinfectants are used.
• C. Wear appropriate personal protective equipment such as gloves and goggles.
• D. Mix different disinfectants together to increase their effectiveness.

Answer: (D)

Verified step by step guidance

1. Understand that the question asks which option is NOT a precaution when using chemical disinfectants.
2. Review each option carefully to identify if it promotes safety or poses a risk.
3. Recognize that storing disinfectants in tightly sealed containers away from heat sources is a safety precaution to prevent spills and reactions.
4. Note that ensuring good ventilation and wearing personal protective equipment (PPE) like gloves and goggles are standard safety measures to protect health.
5. Identify that mixing different disinfectants together is generally unsafe because it can cause dangerous chemical reactions, so it is NOT a precaution but rather a hazardous practice.