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How do you use a Stir Bar?

A stir bar is a laboratory device that lets you stir a solution automatically. Stir bars are used in scientific laboratories every day! In this video, Glorianna Tarlton explains how scientists used a stir bar to develop a method of detecting land mines using bioluminescent bacteria! Glorianna also outlines pro-tips on how to actually use a stir bar in the lab. Glorianna Tarlton produced this video while she was a student at Durham Technical Community College. This video is copyright 2021 Durham Technical Community College, posted with permission. Funding for this video was generously provided by the Durham Tech Foundation. The the paper about detecting land mines using bioluminescent bacteria is here: Shemer B, et al., Detection of buried explosives with immobilized bacterial bioreporters. Microbial Biotechnology (14), (2020). https://doi.org/10.1111/1751-7915.13683 Music and image credits: Audio - Twilight Train, Country & Folk, Dramatic, Dan Lebowitz Image of a mine field - Jason Hollinger CCA 2.0 Image of two people detecting landmines - James Hathaway CCA 2.0 Image of half a landmine - U.S. Army Chemical Materials Activity CCA-SA 3.0 Image of a kid on a medical bed - James Hathaway CCA 2.0 Image of beads, Shemer B. used with permission.