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Lab Technician Interview Questions

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Indeed’s Employer Resource Library helps businesses grow and manage their workforce. With over 15,000 articles in 6 languages, we offer tactical advice, how-tos and best practices to help businesses hire and retain great employees.

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Whether you are preparing to interview a candidate or applying for a job, review our list of top Lab Technician interview questions and answers.

  1. Why did you pursue a career as a lab technician? See answer
  2. If you notice a colleague not following safety protocols, what would you do? See answer
  3. How do you ensure you work safely in the labouratory? See answer
  4. What would you do if you spilled a chemical in the labouratory? See answer
  5. How do you stay up-to-date with the science and technology industries? See answer
  6. What lab equipment do you have experience working with? See answer
  7. What skills do you have that make you a good lab technician? See answer
  8. What is your favourite type of lab work and why? See answer
  9. Have you ever detected a problem when testing a sample? What did you do? See answer
  10. What responsibilities does a lab technician have? See answer
  11. What is GLP and why is it important? See answer
  12. What pipette handling errors have you noticed lab technicians making? See answer
  13. How can you sterilise something in a labouratory? See answer
  14. Is cross-contamination a bad thing? Why or why not? See answer
  15. Have you ever had a disagreement with another colleague? What happened? See answer
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Our mission

Indeed’s Employer Resource Library helps businesses grow and manage their workforce. With over 15,000 articles in 6 languages, we offer tactical advice, how-tos and best practices to help businesses hire and retain great employees.

Read our editorial guidelines

15 Lab Technician Interview Questions and Answers

Why did you pursue a career as a lab technician?

The aim of this question is to assess the candidate's understanding of the role and their motivation for working with you. What to look for in an answer:

  • Passion for their work
  • Understanding of the role and their career path
  • In-depth industry knowledge

Example:

"I pursued a career as a lab technician because I love science. I started university in the science department but wasn't sure what direction I wanted to take. After having a few tutorials in the lab, I realised that I really enjoyed working in a labouratory setting. I talked to a guidance counsellor, and they suggested pursuing a career as a lab technician, so I did."

If you notice a colleague not following safety protocols, what would you do?

The aim of this question is to assess the candidate's ability to follow health and safety regulations and encourage others to do the same. What to look for in an answer:

  • In-depth knowledge of health and safety protocols
  • Willingness to enforce regulations when necessary
  • Strong communication skills

Example:

"If I noticed a colleague wasn't following safety protocols, I would let them know. They may not know all the regulations, so informing them could be helpful. If they continue to ignore protocols, I would escalate the issue to my supervisor. Safety protocols are in place to keep everyone safe, so it's important that every person working in the lab follows them."

How do you ensure you work safely in the labouratory?

The aim of this question is to assess the candidate's knowledge of health and safety protocols. What to look for in an answer:

  • In-depth knowledge of health and safety protocols
  • Ability to follow health and safety protocols
  • Willingness to create a safe work environment

Example:

"I work safely in the labouratory by wearing the necessary PPE, such as gloves, goggles, covered shoes and lab coats. I don't bring any food or drinks into the lab to minimize cross-contamination. I also avoid standing around and talking to my colleagues while in the lab so I don't cause any distractions or collisions."

What would you do if you spilled a chemical in the labouratory?

The aim of this question is to assess the candidate's knowledge of health and safety regulations in regards to handling chemical spills. What to look for in an answer:

  • In-depth knowledge of health and safety protocols
  • Experience handling chemical spills
  • Ability to clean up chemical spills safely or escalate the issue

Example:

"I would first identify the chemical spill as major or minor. If it was major and posed an immediate risk to me and my colleagues, I would get everyone to evacuate. If it was minor, I would contain the spill and area by making a barrier around it. I would then clean up the spill with the appropriate spill kit and dispose of the waste in a hazardous waste bin. Finally, I would decontaminate the area and write an incident report if necessary."

How do you stay up-to-date with the science and technology industries?

The aim of this question is to assess the candidate's current knowledge and ability to stay up-to-date with industry trends and news. What to look for in an answer:

  • Passion for their work
  • Ability to continue their learning independently
  • Up-to-date industry knowledge

Example:

"As the science and technology industries are always changing, I am constantly learning new trends and techniques. I stay updated by reading online magazines, such as Canadian Geographic and The Scientist Magazine. I also enjoy listening to podcasts on my way to work, such as Radiolab and Science Friday. Reading magazines and listening to podcasts keeps me updated in a way that I enjoy, so it doesn't feel like work."

What lab equipment do you have experience working with?

The aim of this question is to assess the candidate's experience with lab equipment you use to determine if they will need further training. What to look for in an answer:

  • Confidence when handling lab equipment
  • Experience working in a labouratory
  • Willingness to undergo further training if necessary

Example:

"I have been working in a labouratory for over three years in a professional setting and for four years while at school. This means I have experience working with common equipment, such as burners, clamps, and microscopes. I also have experience with more high-tech equipment, such as incubators, test chambers, lab ovens, centrifuges, and nitrogen generators."

What skills do you have that make you a good lab technician?

The aim of this question is to assess the candidate's skills and determine if they have the skills you're looking for in a lab technician. What to look for in an answer:

  • Possession of skills you're looking for in a candidate
  • Confidence in their abilities
  • Understanding of the role

Example:

"I think my greatest skills are my analytical skills and ability to learn how to use any lab equipment quickly. My analytical skills make me a good lab technician as I can easily identify issues or come up with hypotheses that seem plausible. Lab equipment is always being updated and created, so being able to learn how to use new equipment easily is a huge advantage. I am often the person who trains employees on how to use our new equipment."

What is your favourite type of lab work and why?

The aim of this question is to assess the candidate's experience and ability to adapt to different types of work. What to look for in an answer:

  • Experience in a similar role
  • Understanding of their role
  • Ability to adapt to different environments and types of work

Example:

"My favourite type of lab work is anything that produces results for patients, such as blood tests or genetic testing. I like knowing that my work is helping someone understand their body better and get the treatment they need. I also enjoy seeing the direct results of my work. However, I'm happy to do any kind of lab work, even cleaning!"

Have you ever detected a problem when testing a sample? What did you do?

The aim of this question is to assess the candidate's analytical skills and ability to solve problems independently. What to look for in an answer:

  • Strong problem-solving and analytical skills
  • Experience testing samples
  • Established process for detecting and eliminating errors in their work

Example:

"We were completing an experiment to test how much bacteria was on a surface after a person sneezed with and without a mask on. We had a control sample and two samples for each scenario. After a few days, I noticed that the control sample was developing much more bacteria than the sample from the surface a person sneezed on without a mask. This went against our hypothesis and I realised that someone labelled the samples wrongly. We had to start the experiment over again to get the right results."

What responsibilities does a lab technician have?

The aim of this question is to assess the candidate's understanding of the role and ability to complete common responsibilities. What to look for in an answer:

  • Experience in a similar role
  • In-depth understanding of the responsibilities of a lab technician
  • Willingness to complete said responsibilities

Example:

"Lab technicians have a wide range of responsibilities, such as completing tests, examining samples with a microscope, maintaining a safe work environment, and managing equipment. Lab technicians usually work as a team under a labouratory supervisor, so they must work well together."

What is GLP and why is it important?

The aim of this question is to assess the candidate's industry knowledge and ability to follow good labouratory practises. What to look for in an answer:

  • In-depth industry knowledge
  • Understanding of GLP and its importance
  • Ability to follow good labouratory practises

Example:

"GLP stands for good labouratory practise, which are rules or principles people working in a non-clinical labouratory must follow. GLP standards are important as they minimize human errors, create a safe work environment, and ensure all lab activity is legal and ethical."

What pipette handling errors have you noticed lab technicians making?

The aim of this question is to assess the candidate's technical knowledge and ability to eliminate pipette errors. What to look for in an answer:

  • Experience working with pipettes
  • In-depth understanding of how to handle pipettes
  • Ability to correct pipette handling errors

Example:

"I've seen a lot of lab technicians work too quickly when handling a pipette which can lead to errors as using a pipette requires precision. Many lab technicians also forget to pre-wet the pipette tip, leading to inaccurate results. Another common error is using the incorrect pipette tips for a task, so I always double-check my tips before starting any task."

How can you sterilise something in a labouratory?

The aim of this question is to assess the candidate's technical knowledge when it comes to sterilizing their equipment and environment. What to look for in an answer:

  • Knowledge of different sterilization methods
  • Experience sterilizing lab equipment
  • Understanding of the importance of sterilization

Example:

"There are five main methods of sterilization in a labouratory: using dry heat, wet heat, filtration, radiation, or solvents. With dry heat or wet heat, high temperatures kill bacteria or microbes. Filtration sterilization uses a small filter. Radiation uses UV light, X-rays or gamma rays to sterilise. Solvents like isopropanol or ethanol are used to kill microbial cells."

Is cross-contamination a bad thing? Why or why not?

The aim of this question is to assess the candidate's understanding of cross-contamination and why it's a bad thing in lab work. What to look for in an answer:

  • Ability to limit cross-contamination in their work
  • Understanding of what cross-contamination is and why it's a bad thing
  • Knowledge of health and safety protocols to limit cross-contamination

Example:

"Cross-contamination is a bad thing, especially in lab work, as it can alter results. To limit cross-contamination, lab technicians must sterilise equipment, store chemicals properly, and keep a clean work environment."

Have you ever had a disagreement with another colleague? What happened?

The aim of this question is to assess the candidate's communication skills and ability to solve problems independently. What to look for in an answer:

  • Ability to work as a team
  • Strong interpersonal and communication skills
  • Willing to solve problems on their own

Example:

"I did have a disagreement with a colleague once about where to store our samples. He wanted to store them in the freezer, but I told him the samples didn't need to be frozen, so we could store them in the refrigerator. We went back and forth for a bit, as we were both sure we were right. We asked our supervisor just to be sure, and he told us to put the samples in the refrigerator. My colleague apologised and used the disagreement as a learning experience."

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