Lab Technician - 3rd shift
Posted Oct 5, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about how you keep lab notebooks and records.
What they are checking: Recordkeeping discipline, which allows any result to be traced and defended.
This is third shift. How do you stay accurate and alert working overnight?
What they are checking: Self-management on a night schedule where mistakes are easier to make.
Tell me about a time you caught an error that others missed.
What they are checking: Attention to detail and willingness to raise concerns.
What would you do
A sample fails to meet specification. What do you do next?
What they are checking: Following procedure, retesting where appropriate and escalating to the manager as the posting requires.
About the work
Walk me through how you test a finished product against its specification before it ships.
What they are checking: A methodical approach to standardized testing that protects customers from bad product.
How do you prepare reagents and standard solutions so your results can be trusted?
What they are checking: Careful lab technique, since bad reagents lead to wrong results and wrong decisions.
What is a certificate of analysis, and why does it matter to customers?
What they are checking: Understanding that the lab's results become a promise to customers about product quality.
How do you calibrate an instrument, and how do you know it is working correctly?
What they are checking: Instrument care and calibration habits that keep data accurate.
How do you handle retain samples, including storing and disposing of them?
What they are checking: Following sample control rules that support quality investigations later.
What lab safety practices do you follow when working with chemicals?
What they are checking: Safe habits with protective equipment, ventilation and chemical handling in a lab.
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Practice this out loudThe full job description
As published by Brenntag.