Describe a time when you had to troubleshoot an issue with laboratory equipment. How did you handle it?

One time, while working in the laboratory, I encountered an issue with the pH meter. It suddenly stopped functioning and I couldn't get accurate readings for my experiment. I quickly realized that it needed to be calibrated. I followed the instructions in the equipment manual to calibrate the pH meter and troubleshoot the issue. After calibrating it, the pH meter started working properly again and I was able to complete my experiment successfully.

During a lab experiment, I encountered a problem with the centrifuge machine. It was not spinning at the desired speed, resulting in improper separation of samples. To troubleshoot the issue, I first checked the power supply and ensured it was properly connected. Then, I inspected the rotor and noticed that it was not securely placed. I carefully repositioned the rotor and started the centrifuge again. This time, it worked perfectly and achieved the desired speed for sample separation. I documented the issue and the steps taken to resolve it in the laboratory logbook.

During a research project, I encountered a major issue with a key piece of laboratory equipment, specifically the gas chromatograph. It was not producing accurate results, which could have jeopardized the entire project. I immediately reviewed the equipment manual and identified potential causes for the problem. I conducted a thorough inspection of the gas chromatograph, checking for any leaks or malfunctions in the key components. After careful examination, I discovered a faulty injector seal. To resolve the issue, I replaced the seal using spare parts from the laboratory stock, ensuring minimal downtime. I then recalibrated the instrument and performed test runs to validate its accuracy. By troubleshooting and resolving the issue promptly, I saved valuable time and resources for the research project.