Will lab classes last 3 hours?

So my lab is from 4-7 and I was just wondering if most lab classes(BSC2010l in particular) usually take 3 hours or if they end earlier. My first lab session did last all 3 hours but I want to know if later sessions may end sooner.

It really depends on the teacher, the course, and the individual lab. In Chem I almost always was there 2.5-3 hours. In Bio, sometimes I’d be there 1.5 hours, sometimes I’d be there the full 3 depending on the lab. Most Bio labs I did were pretty fun and interesting, though, so the time didn’t really drag on

It’s been a long time fortunately for me! So I don’t have “up-to-date” info for you or any real answer but yeah, it always took 3 hours (even when I had a Friday night lab and a hot date). My lab was Friday night 7-10pm. Hope they don’t do that anymore. But G’ville never closed early even then. Not fun but you do what you gotta do.
Except for the bio labs–those were great–glad to hear at least those are still fun!