Which practice helps minimize exposure during lab work?

Which practice helps minimize exposure during lab work?

• A. Eating during procedures
• B. Reusing PPE between tasks without decontamination
• C. Sharing needles and sharps
• D. No mouth pipetting

Answer: (D)

The main idea is to remove a direct route for hazardous substances to enter your body. Mouth pipetting creates a direct mouth-to-liquid path, so any liquid or aerosol can be drawn into your mouth, throat, or lungs, bypassing protective barriers. Using a mechanical pipette with disposable tips keeps hands and face away from the liquid and reduces splash and inhalation risks, which is why this practice minimizes exposure in the lab. Eating during procedures and reusing PPE without proper decontamination both increase the chance of ingesting or spreading contaminants, while sharing needles and sharps raises the risk of needle-stick injuries and cross-contamination. No mouth pipetting specifically cuts out the most direct exposure route, making it the safest choice.

The main idea is to remove a direct route for hazardous substances to enter your body. Mouth pipetting creates a direct mouth-to-liquid path, so any liquid or aerosol can be drawn into your mouth, throat, or lungs, bypassing protective barriers. Using a mechanical pipette with disposable tips keeps hands and face away from the liquid and reduces splash and inhalation risks, which is why this practice minimizes exposure in the lab.

Eating during procedures and reusing PPE without proper decontamination both increase the chance of ingesting or spreading contaminants, while sharing needles and sharps raises the risk of needle-stick injuries and cross-contamination. No mouth pipetting specifically cuts out the most direct exposure route, making it the safest choice.