Which of the following statements about lab safety are correct? Select all that apply.

Question

BlackTom AI · Accepted Answer

Glove contamination requires immediate removal and proper disposal, and broken glass must be reported right away — these are the core safety rules that justify the correct choices.

1) Relevant knowledge points and concepts
- Personal protective equipment (PPE): safety glasses, lab coats, gloves must be worn and handled to prevent exposure and cross-contamination.  
- Contaminated PPE disposal: chemically contaminated gloves are treated as hazardous/toxic waste and must be changed and disposed of in the appropriate waste container.  
- Incident reporting: broken glass, spills, or other hazards must be reported immediately to instructors or lab staff so trained personnel can secure and clean the area safely.  
- Avoiding cross-contamination and unauthorized phone use in the lab: phones and personal items must not be used while wearing contaminated gloves.

2) Step-by-step reasoning for each option
a. "Hand over my dirty glassware to lab staff to be cleaned." — Incorrect. Most labs require you to follow set cleaning procedures (rinsing, designated sink areas) or place glassware in specified locations; handing dirty glassware directly to staff is not a safe general practice and can expose staff to contaminants.  
b. "When I notice a chemical stain on my gloves I change them immediately and throw them in the toxic solid waste bin." — Correct. A stained glove indicates contamination; change gloves promptly and dispose of them in the chemical/toxic waste container per lab protocol.  
c. "When arriving, I enter the lab, find a bench space and then put on my safety glasses and lab coat." — Incorrect. PPE should be put on before handling materials or occupying bench space; safety glasses and lab coats must be worn upon entry or before starting any lab activity.  
d. "Wipe my gloves and check my phone straight away." — Incorrect. Wiping gloves is not sufficient to decontaminate them; you should remove contaminated gloves before touching personal devices to prevent spreading contaminants.  
e. "When a piece of glassware breaks I immediately tell the instructor or lab staff." — Correct. Notify staff immediately so they can respond with proper cleanup and disposal procedures.

3) Calculations
- None required.

4) Why the correct answers are correct
- Both (b) and (e) follow standard lab safety practices: proper disposal of contaminated PPE and immediate reporting of broken glass to prevent injury and contamination.

Conclusion: The correct selections are b and e, which matches the provided answer.

Which of the following statements about lab safety are correct? Select all that apply.多项选择题

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