When should a student request a replacement liquid hazardous waste bottle for the lab?

Question

BlackTom AI · Accepted Answer

When evaluating how to manage liquid hazardous waste bottles in the lab, it helps to consider safety, regulatory, and practical handling issues.
Option 1: 'When the bottle is ~50% full.' While this might seem like a cautious threshold, it is not the recommended trigger in most safety guidelines. Waiting until the bottle is only half full can reduce the available headspace needed for safe handling, increase the risk of spills during transport or cap leakage, and may not prevent overflow later when liquids expand or when additional waste is added.
Option 2: 'When the bottle is completely filled.' This is unsafe and impractical. A bottle should never be allowed to reach full capacity; there must be headspace for expansion, gas release, and to allow safe closure. Replacing only after full capacity also risks spills and complicates containment in the event of a mishap.
Option 3: 'When the liquid level nears 80 - 90% of the bottle capacity.' This option aligns with standard safety practices to replace or consolidate waste before reaching near-full capacity. Maintaining substantial headspace helps prevent overflows, reduces the chance of improper closures, and facilitates safe transport to a central waste collection point.
Option 4: 'At the end of each lab meeting.' Scheduling replacements by meeting times does not ensure the bottle is managed before it becomes too full. This approach can lead to bottles reaching high levels between meetings and introduces unnecessary risk.
Option 5: 'At the end of the experiment.' Waiting until the end of an experiment may allow the bottle to approach or exceed safe levels during the workflow, increasing spill risk and complicating waste management if many experiments run simultaneously. It is better to replace around the threshold rather than wait until the end.
In summary, the safest and most commonly recommended practice is to replace or replace/secure a bottle when the liquid level near 80–90% of capacity, to maintain headspace, reduce spill risk, and ensure compliant waste handling.

CHEM100A_SP25_LST CHEM 100A: LAB SAFETY EXAM - Spring 2025

When should a student request a replacement liquid hazardous waste bottle for the lab?

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CHEM100A_SP25_LST CHEM 100A: LAB SAFETY EXAM - Spring 2025

When should a student request a replacement liquid hazardous waste bottle for the lab?

查看解析

登录即可查看完整答案

类似问题

Which of the following guidelines for handling waste are given in the text?

Which of the following chemicals should never be disposed of in the sink?

How should you dispose of paper towels, weigh paper, or glove contaminated with trace amounts of hazardous chemical(s)?

Which reaction products can be disposed of by rinsing them down the drain?

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Where should you dispose of waste after an experiment in the laboratory?

实验室内应处理的化学品 在实验室废弃化学品时，

What do you do with your unused chemicals at the end of lab?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单

实验室内应处理的化学品在实验室废弃化学品时，