The video is a short refresher for ABE teachers on how to set up and run a gel electrophoresis experiment, filmed in Norwich as part of the ABE training series. It walks through assembling the gel tank, preparing the gel, loading samples, and running the gel, emphasising practical steps for classroom use. A note explains that the protocol has since changed and now uses 1× TAE buffer instead of 1× SB, but the overall workflow remains the same.