Speaker 1: Warning. The following video contains dangerous actions performed under the supervision of trained professionals. Do not attempt to recreate any of these videos at home or in school. Viewer discretion advised.

Speaker 2: Hello, I'm Mr. Bazanson, science teacher at Oroville High School. Today we're going to talk about one of the most important things in a science classroom, and that's lab safety. Specifically, we're going to talk about the do's and the don'ts of lab safety. Do not ever wear open-toed shoes, such as sandals or flip-flops, on lab days. Ouch. Do always make sure to wear your personal protective equipment. Do not ever touch your face or eyes after handling chemicals. Ugh. Cole. Eyewash station, right here. Hurry up. Hurry up. Do always make sure to wash your hands before and after a lab. Do always make sure to wash your hands before and after a lab. Do not ever eat or drink during a lab experiment.

Speaker 3: What? PB&J? Love you, Mom.

Speaker 2: Do not ever smell or inhale an unknown chemical. Do use the wafting method if you must smell a chemical. Do not forget to wear gloves when handling strong acids or bases. Alright, class, so now very carefully we're going to add the hydrochloric acid to the copper sulfate. Alright, and you'll see this is an exothermic reaction, and so it's going to begin to- AHH. IT BURNS. You forgot the gloves.

Speaker 3: Do not wear gloves when handling strong acids or bases.

Speaker 2: Do not leave your lab area without first cleaning up. Do not ever mix chemicals unless instructed to do so specifically in your lab directions.

Speaker 1: Oh yeah, this should work.

Speaker 2: Do always report any spills or accidents to your lab instructor.

Speaker 3: Mr. B, I spilled the chemicals.

Speaker 2: Do not use your cell phone during a lab.

Speaker 3: Lily. Lily. Look. Whoa. I'm in biology class.

Speaker 2: Do not ever cut towards your hand when using a scalpel during a lab dissection. Oh. Oh. Oh. Do always use caution when handling sharp objects such as knives and scalpels.

Speaker 1: Oh, that's Houston.

Speaker 2: Do not ever engage in any type of prank or horseplay during a lab activity. Ha ha. Bro, bro.

Speaker 1: One float. Hey, I want to join, guys. Holy shit.

Speaker 2: Look at me. Do not ever leave backpacks and other materials in the aisles during a lab. Okay, guys, just show off your graduated cylinders. And if you look here on number three in the left... Do not ever touch hot glassware with your bare hands.

Speaker 3: Alright, so I think you have to take this. Okay.

Speaker 2: Do use tongs or rubber grabbers whenever you are handling hot glassware. Do not ever dump a chemical down the sink without first asking your teacher for permission.

Speaker 3: What should I do with this now? I don't know. You could probably just pour it down the sink. Okay.

Speaker 2: Do always ask your teacher for permission before dumping chemicals down the sink.

Speaker 3: What should we do with this now? Hey, Mr. B, can we just pour that down the sink?

Speaker 2: Yeah.

Speaker 3: Okay.

Speaker 2: Do not ever go into the storage closet without permission from your teacher. Hey, get out of there. That's a detention. Do not ever leave an open flame Bunsen burner unattended. Alright, class, so today here's what we're going to do. Alright, class, so today here's what we're going to do. We're going to make sure that we're always going to be... Do always make sure you know where the shower is in a science classroom. Remember kids, if you follow these simple do's and don'ts of lab safety, you will be sure to have a safe, fun year in your science classroom.

Speaker 3: Hello? Hello?