Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/2SrDulJ
I remember watching this a few years back and now as a chemistry major I still go back to this video every now and then to tell people about the broken pipette/rod type of injury. Thank you so much for making this. :) Don't know if anyone is reading this, but here's another tip- never dilute concentrated aqueous acid by simply adding water to it! Instead, add water to your beaker (or whatever type of equipment you're using) first and THEN pipette the acid into it. Otherwise, the first few droplets of water might react and heat up very quickly and end up splashing and causing burns. Be safe and stay curious!
Small note, if you do happen to need to pour something slowly, don't hesitate to use a glass rod to help you in not dribbling it down the side of the container. Put the glass rod in the thing you are pouring into and pour the liquid down the side of the glass rod and it will guide the liquid where it needs to go, overcoming the surface tension in the process. Particularly good for liquids that adhere to glass, like Water and anything dissolved in that water.
I once dropped a crucible full of some chemical that was reacting in it (I have a really shaky grip) and it burnt a hole through the table. My Chem teacher started calling me 'Danger Girl' after that 😭
I watched this video for the first time like 2 years ago and I still get hanks voice in my head telling me to "commit" when pouring anything and a lot of other things in life that follow the same principle. Very valuable advice both for chemistry and life!
My had a lab accident in regards to disposing what I think was Benzilic acid, or some other fatty acid. The instructions for the lab were poorly worded so we prematurely percieved that we needed a new acid to work with. However, (and you can tell we were geinuses when you see the next part of my story and know that the experiment was specifically concerning boiling point elevation and freezing point depressions with solutions), we disposed of it improperly in the sink and Benzilic acid has a melting point above 100 degrees Celsius and we, not remembering this kind of important aspect of the acid, poured it into the sink and turned on the water. *Ckhshhhhhhhhhhk* was the sound of the acid immediately solidifying on the entire bottom part of the sink, and *slap* was the sound of our hands into our own faces at the realization of what we had just done and the realization of how annoying it was going to be to clean up. It made for a very funny story to tell as y'all can see.
The only lab injury I've ever had was from sheer stupidity. It was in undergrad gen chem. My lab period was ending and I was in a hurry to dry my glassware. To get one of the test tubes totally dry, I used a rolled up paper towel and shoved it in with a glass stirring rod... Yeah, there was a fair bit of bleeding. The most memorable part is that once I ran to the infirmary, the nurses ended up pouring liquid Tylenol all over my hand! On the plus side, she looked at the wound under magnification and apparently, there were no glass shards in there. Good times...
My fondest memory in chem lab was getting concentrated hydrochloric acid on my shoe and it burning a hole into it in 3 minutes. Luckily my teacher used it as an example and gave me the money to buy a new pair :P
Rob Gilmore are you sure that it was conc. HCl? I happen to pour concentrated HCl on my clothes (and skin) every so often, since we do a lot of analysis and titrations in our chem lab, and it just behaves like water. It evaporates after a while. Maybe it was sulphuric acid.
Maybe it is a safety tip. I mean, long neck ties are more likely to catch fire and drip into flasks because they're longer, kind of like long hair safety.
I got sent to this video from a safety training module for an actual job in a lab. Congrats, this video has made it! I got worried for a second when it said it was a "humorous video" but this was the best possible outcome
"Assume every liquid except water is flammable." How unscientific! My labmates and I test to see whether any liquid is flammable! if it is, get a whole beaker of it and set it on fire... for science.
Yeah, it wouldn't hurt to update this video with a quick mention of the new Globally Harmonized System of Classification and Labelling of Chemicals (www.osha.gov/dsg/hazcom/ghs.html). Maybe it could be spliced in between a scene cut?
Hank, I think you are the best teacher I have ever had the pleasure of learning from. Thank you so very much for all these videos! You and your brother are fantastic!
thank you for having a solution to pouring solutions. I'm really short and trying to pour something into a burrette while making it rain on my station was pretty embarrassing and i couldn't do much about it but now one shall commit thank you sir.
We just watched this in our Organic Chemistry Lab. I was expecting the weird old one then Hank came on and I had one of those excited nerd moments. So guess what crash course, you've attracted the attention of a SUNY school!
Here in India most of the Higher Secondary students use just a labcoat for safety(which by the way many forget to bring for practical class). Noxious gases? Well, we breath and cough. Interesting to see the entire class(including the teacher)coughing. Still all this makes the lab life memorable-burns, heating the test tube as if cooking food, fumes, broken apparatus and on goes the list
When I was in my Junior year of high school I was a lab assistant for the Chemistry teacher and another student and I were assigned to go around each week to all the science rooms and test the eyewashes and showers. Best Job Ever. XD
I had a bunsen burner tube come off the burner and the tip of it ignite in the fume hood. All I said to the professor was "Emergency, gas off." and he simply turned the gas off with no hesitation. If I met anyone who I was in that lab with, they would probably remember me just for that event and how large and hot the flames were inside that fume hood.
Hank forgot to mention that you should keep the door locked. In that way, you buy yourself a few extra minutes to flush the evidence when the cops break the door down.
I was a safety officer a long time ago and would demonstrate the eyewash/shower sometimes. The water initially was warm and it gave me an excuse hide in the office for a few hours while I dried off. The teacher I had for basic and advanced chemistry was very keen on lab safety. He became a teacher after a lab accident where he worked left him slightly handicapped. Great video!
We once did an reaction where it said to add a thermometer and keep the temperature at around 100°C and my teacher said, cooking water is always at 100°C so we do not need a thermometer. What he didn´t know at this time is that the reaction results in enthalpy so you actually had to cool it down to 100°C...
I'm doing chemistry and biology as two of my A-levels in September & I'm going to watch all these crash course science videos to get me ready for them! Thanks! :)
At my old uni, those emergency showers were often located in hallways, near bookcases and other places you wouldn't normally want water, so it was pretty obvious they were for emergency use only. Also in most labs (I wasn't in the chemistry departments much) eye wash was with a specially shaped glass in the first aid kit, not that smart fountain you showed.
I took an advanced chem lab, and had to use HCl gas. The cylinder was in a hood, hooked up to an Erlenmeyer flask with a rubber stopper, so I could use a syringe to get the gas out of the flask. The hood used sliding glass panels, and I damn near forgot to close it. But at the last minute I did, and it was a good thing too, because when the gas was turned on the rubber stopper flew off the flask. I would have been covered in HCl gas. So, 2 lessons: CLOSE THE HOOD, and TAPE DOWN RUBBER STOPPERS.
Loved this video. I show this to my 10th grade chemistry class and then I had them do a class project of teaching the class about lab safety. Give it s try and see how you like it.
Thank you! This semester I will be showing this instead of the very old yet still true but very boring video that has been shown for years! I love your channel and will promote to all my chem classes from now on.
One time my chemistry teacher cleaned up some hydrochloric acid (just a few drops that landed on the counter) with a paper towel and threw it in the garbage bin. Then he found some dripped sodium hydroxide on the surface and cleaned it up with another paper towel and threw it in the same bin. Acid + Base = explosion, flames, and smoke alarm. So remember kids, always know what you throw away in your trash bin XP
Thank you for this video. I have a lab safety quiz in my Chemistry class tomorrow and I didnt know if I'd be able to remember all the info. This video broke things down for me and made it simple. Im much more confident now that I understand the rules.
I have actually stuck a glass rod through my hand, but not how Hank described it. I was 14 and my science teacher was talking about how the kind of glass it's made of can't hurt you. So, determined to prove him wrong, I took a glass stirring rod, broke it and then forced it through my hand. I didn't expect that it would actually go through because the edge did feel blunt, but it sure as heck did go through like a hot knife through butter. I told my teacher and all he did was tell me to go to the bathroom to clean it up. So I trailed blood to the bathroom and wrapped it in toilet paper for the rest of the day.
I wish I could for your own benefit if nothing else, but I did indeed track an impressively crimson chain of blood drops to the science-wing bathroom. Mind you this was nearly 20 years ago, so many subsequence stirring rods have been manufactured thus far.
+Nothing\ well i think we all have our own little stories. I once jammed, and I kid you not, a needle into my palm. The needle, thankfully only contained some deionised water but imagine if it contained, say hydrochloric acid...
John Yyc I've actually stuck a long thin needle through my palm. Also gave myself the biggest bruises ever setting up IVs with absolutely no knowledge of how to do them.
Science teachers should show this to students new to labs. At my collage so many students in my bio lab didnt know lab safety and the teacher never taught them. They had food and drinks around and the girls had their hair long.
Another tip for forcing glass through stoppers: Hold the stopper between your palm and a table. Roll the stopper a little back and forth while forcing the glass rod or tube through with your other hand.
i'm still so mad about that guy who trashed your samples. what the hell was he thinking i wanna go back in time to demand answers and make him admit he just didn't like you or something
It's a spring-powered pipette... you can adjust the tension in the spring up in the button and it will take and dispense the volume you set it to. They're a little on the expensive side though, so bulbs are much more common.
We just watched this video in my 10th grade Chem class today. I literally almost shouted "HOLY CRAP IT'S HANK" in front of everybody. But, all my classmates did love your jokes. Plus, they all laughed hysterically at you using the eyewash station and drenching yourself in the shower :) Keep up the great work.
:O Is crashcourse following my syllabus?! Every time I see an upload, it's the exact same chapter my teacher is teaching me! Today is my first day doing a practical for Chemistry and I just saw this video! Is it just a coincidence or something more?... I'm a Singaporean student studying the GCE A-Level syllabus
This video always reminds me of that one episode of Bones (the first Christmas episode) where they get quarantined in the lab because Hodgins wasn’t following lab safety protocol😂 Zack and Hodgins racing to the decontamination shower gets me every time😂😂
Not very relevant note on the hair rule: it was Christmas mass in church and I don't know if everyone does this Christmas Eve but we light candles at a point during the mass. Everyone has their own little stick of a candle that they hold and pray for both baby Jesus and in hopes that the wax doesn't drop onto their fingers. Anyway, my aunt's hair once caught on fire in the middle of everyone being quiet and solemn and praying so yeah. Not relevant but I thought I'd share.
Quick fix for destroying that surface tension: put a thin rod over the top of the container and pour along the rod (glass stirring rods work well). Surface tension will instead follow the rod to its tip, taking the liquid wherever you want it to go! This way allows you to pour really slowly if you only need a little bit, or happen to be a timid lab user.
Hey Crash Course people, can you please update this video? There are some issues with it! (disclaimer: I teach college level organic lab, hello my students who I told to watch this video!) (1) Hank doesn't wear goggles and he keeps touching his glasses with his GLOVED hands...a no-no in lab! Take your gloves off to scratch your nose or adjust your glasses! (2) Lab Safety is going away from the hazard diamond to GHS pictograms, hazard classes and categories so this should be updated. (3) DILUTION IS NOT THE SOLUTION the EPA will fine you a bazillion dollars. In research labs it is against the law to dispose of anything with a pH > or = 12.5 or < or = 2 in any other way than as hazardous waste.
Well he did say it's for some chemicals like common acids. Most common acids in labs are diluted by default. He did say others should be properly disposed of.
I loved this video. I think all first time lab noobs should watch it. It is informational, covers all the emergency protocol and station purposes, but it is much more entertaining than what they normally make you watch! Some of my funniest stories from college were set in a chem lab. I was the "lucky" student that Murphy's law have a field day. The TA's nicknamed me Trouble. If you ever need to know how to evacuate a building while doing a titration let me know. I have that one figures out!
The MSDS system is being replaced soon by a new system that conforms to international agreement on chemical hazard warning and information communication. It's basically just the MSDS slightly tweaked and formated to conform to the new standard. And it will no longer be called MSDS. The new format is cleaner and easier to read and standardized, so all of the sheets from every manufacturer will have the same layout.
Hanks in a chemistry lab, sometimes you're worse off wearing a labcoat in there. They're meant to protect you from powder and particulates(like bacteria et al). Not from supersonic bits of pyrex from the flask that's exploded, it's not a flak jacket. most industrial centres do insit on them though as 'proper PPE'
Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: apple.co/3d4eyZo
Download it here for Android Devices: bit.ly/2SrDulJ
I always wanted to see one of those showers in action.
there was surprisingly not as much water as i expected
I've watched a lot of Hank Green videos.
A lot.
And I've never seen him so happy or so excited as when talking about lab safety.
Like so many videos.
I remember watching this a few years back and now as a chemistry major I still go back to this video every now and then to tell people about the broken pipette/rod type of injury. Thank you so much for making this. :)
Don't know if anyone is reading this, but here's another tip- never dilute concentrated aqueous acid by simply adding water to it! Instead, add water to your beaker (or whatever type of equipment you're using) first and THEN pipette the acid into it. Otherwise, the first few droplets of water might react and heat up very quickly and end up splashing and causing burns. Be safe and stay curious!
Small note, if you do happen to need to pour something slowly, don't hesitate to use a glass rod to help you in not dribbling it down the side of the container.
Put the glass rod in the thing you are pouring into and pour the liquid down the side of the glass rod and it will guide the liquid where it needs to go, overcoming the surface tension in the process. Particularly good for liquids that adhere to glass, like Water and anything dissolved in that water.
Chemistry life hacks.... 😂
Also, WHY IS THE EMERGENCY SHOWER NEXT TO A BUNCH OF PLUGGED IN ELECTRONICS?! o.O
good point
I once dropped a crucible full of some chemical that was reacting in it (I have a really shaky grip) and it burnt a hole through the table.
My Chem teacher started calling me 'Danger Girl' after that 😭
Awe lol that is a little bit funny but its good you didnt get any on you. +Tanya Y
lol danger girl is a cool title tho :D
lol
heres a heart
Girl u better start using that as ur handle/ yt name😂😂 it’s honestly pretty dope
This is so much better than that 80s safety video
Why oh why can't they show this in schools instead of the ridiculous video they show now?
this showed up today in my intro to engineering tech class
they just showed this at my school
I'm so jealous lukassnakeman michael benzur The one they show at my college is so insanely cheesy and stupid it's ridiculous.
+Delaney Pollard They show safety videos in science class?
+Delaney Pollard They show safety videos in science class?
8:09 THE CHEMISTS' WATER BUCKET CHALLENGE
YES!
This has changed the way I pour EVERYTHING. Thank you!
innocent_fugitive break that surface tension!
We watched this in Science Lab, and I shouted, "OMG HANK GREEN!" and no one knew what I was talking about!
I had to restrain myself from doing that lol.
I was like, "you guys, I unironically watch this channel". My science class finds me weird now.
We actually watched your video during chem lab here at Chattanooga State! Finally a replacement for 1980s lab safety VHS tapes!
i love your potter puppet pals t-shirt
Eyyy Pikapetey what up?!
Same what a coincidence, I was reading a Harry Potter book
This is the best lab safety video ever. Also, adorably nerdy.
I watched this video for the first time like 2 years ago and I still get hanks voice in my head telling me to "commit" when pouring anything and a lot of other things in life that follow the same principle. Very valuable advice both for chemistry and life!
My had a lab accident in regards to disposing what I think was Benzilic acid, or some other fatty acid. The instructions for the lab were poorly worded so we prematurely percieved that we needed a new acid to work with. However, (and you can tell we were geinuses when you see the next part of my story and know that the experiment was specifically concerning boiling point elevation and freezing point depressions with solutions), we disposed of it improperly in the sink and Benzilic acid has a melting point above 100 degrees Celsius and we, not remembering this kind of important aspect of the acid, poured it into the sink and turned on the water. *Ckhshhhhhhhhhhk* was the sound of the acid immediately solidifying on the entire bottom part of the sink, and *slap* was the sound of our hands into our own faces at the realization of what we had just done and the realization of how annoying it was going to be to clean up. It made for a very funny story to tell as y'all can see.
lol I dropped a test tube filled with hcl on the teachers desk while showing her and she got rlly mad lol
The only lab injury I've ever had was from sheer stupidity. It was in undergrad gen chem. My lab period was ending and I was in a hurry to dry my glassware. To get one of the test tubes totally dry, I used a rolled up paper towel and shoved it in with a glass stirring rod... Yeah, there was a fair bit of bleeding. The most memorable part is that once I ran to the infirmary, the nurses ended up pouring liquid Tylenol all over my hand! On the plus side, she looked at the wound under magnification and apparently, there were no glass shards in there. Good times...
what-how-oUCH.
My fondest memory in chem lab was getting concentrated hydrochloric acid on my shoe and it burning a hole into it in 3 minutes. Luckily my teacher used it as an example and gave me the money to buy a new pair :P
One hell of a teacher XD
Rob Gilmore ...I got concentrated HNO3 on my clothes and it turned orange
Rob Gilmore are you sure that it was conc. HCl? I happen to pour concentrated HCl on my clothes (and skin) every so often, since we do a lot of analysis and titrations in our chem lab, and it just behaves like water. It evaporates after a while. Maybe it was sulphuric acid.
Oh my God I watched this in chem today and it made me so happy to see Hank when she turned the video on.
the entire time
in chemistry this year
i always wondered
what does the emergency wash look like when it is turned on
thank you hank
Don't forget bow ties in place of neck ties. That's no a lab safety tip; bow ties are just cool.
+Andrew MacKinnon what type of high class chemistry do you do?
Bill Nye is that you
Maybe it is a safety tip. I mean, long neck ties are more likely to catch fire and drip into flasks because they're longer, kind of like long hair safety.
And as the good Doctor said. "Bow ties are cool."
@@DKing-qr1gl you don't wear bow ties to your school?
Class people :)
Be classy :)
I got sent to this video from a safety training module for an actual job in a lab. Congrats, this video has made it!
I got worried for a second when it said it was a "humorous video" but this was the best possible outcome
I was also taught to always pour acid into the other liquid you're adding it to. If it splashes, it just displaces the less harmful material.
DESTROY THAT SURFACE TENSION ! Lol
Like...smash?
I've rubbed sulphuric acid on my face before because i did not realise it was on my gloves. Kids, DON'T EVER TOUCH YOUR FACE IN THE LAB
CazyWazyWooWoo what .... what happened
"Assume every liquid except water is flammable."
How unscientific! My labmates and I test to see whether any liquid is flammable! if it is, get a whole beaker of it and set it on fire... for science.
It's worth mentioning that MSDS sheets are in the process of being replaced with globally standardized SDS sheets.
Yeah, it wouldn't hurt to update this video with a quick mention of the new Globally Harmonized System of Classification and Labelling of Chemicals (www.osha.gov/dsg/hazcom/ghs.html). Maybe it could be spliced in between a scene cut?
Mark Jochum I think they could just add in an annotation for it as well. Depending on how much detail they would like to put in of course.
Best educational channel of the world.
This is a good recess from all the entropy and enthalpy i've watched from previous episodes hahahaha
Hank, I think you are the best teacher I have ever had the pleasure of learning from. Thank you so very much for all these videos! You and your brother are fantastic!
thank you for having a solution to pouring solutions. I'm really short and trying to pour something into a burrette while making it rain on my station was pretty embarrassing and i couldn't do much about it but now one shall commit thank you sir.
We just watched this in our Organic Chemistry Lab. I was expecting the weird old one then Hank came on and I had one of those excited nerd moments. So guess what crash course, you've attracted the attention of a SUNY school!
Here in India most of the Higher Secondary students use just a labcoat for safety(which by the way many forget to bring for practical class). Noxious gases? Well, we breath and cough. Interesting to see the entire class(including the teacher)coughing. Still all this makes the lab life memorable-burns, heating the test tube as if cooking food, fumes, broken apparatus and on goes the list
true!! even when our teachers want us to smell something they just stick it in our face
When I was in my Junior year of high school I was a lab assistant for the Chemistry teacher and another student and I were assigned to go around each week to all the science rooms and test the eyewashes and showers. Best Job Ever. XD
I had a bunsen burner tube come off the burner and the tip of it ignite in the fume hood. All I said to the professor was "Emergency, gas off." and he simply turned the gas off with no hesitation. If I met anyone who I was in that lab with, they would probably remember me just for that event and how large and hot the flames were inside that fume hood.
Hank forgot to mention that you should keep the door locked. In that way, you buy yourself a few extra minutes to flush the evidence when the cops break the door down.
I was a safety officer a long time ago and would demonstrate the eyewash/shower sometimes. The water initially was warm and it gave me an excuse hide in the office for a few hours while I dried off. The teacher I had for basic and advanced chemistry was very keen on lab safety. He became a teacher after a lab accident where he worked left him slightly handicapped. Great video!
"Dilution is the solution to pollution." XD This is why I love you Hank, please make more episodes in the lab!
THAT TSHIRT OMG POTTER PALS
We once did an reaction where it said to add a thermometer and keep the temperature at around 100°C and my teacher said, cooking water is always at 100°C so we do not need a thermometer. What he didn´t know at this time is that the reaction results in enthalpy so you actually had to cool it down to 100°C...
I'm doing chemistry and biology as two of my A-levels in September & I'm going to watch all these crash course science videos to get me ready for them! Thanks! :)
"Dilution is the solution to pollution!" - 😂❤
Hank, you smiled so much in this episode. You clearly enjoy yourself. Wonderful to watch.
At my old uni, those emergency showers were often located in hallways, near bookcases and other places you wouldn't normally want water, so it was pretty obvious they were for emergency use only. Also in most labs (I wasn't in the chemistry departments much) eye wash was with a specially shaped glass in the first aid kit, not that smart fountain you showed.
I took an advanced chem lab, and had to use HCl gas. The cylinder was in a hood, hooked up to an Erlenmeyer flask with a rubber stopper, so I could use a syringe to get the gas out of the flask. The hood used sliding glass panels, and I damn near forgot to close it. But at the last minute I did, and it was a good thing too, because when the gas was turned on the rubber stopper flew off the flask. I would have been covered in HCl gas.
So, 2 lessons: CLOSE THE HOOD, and TAPE DOWN RUBBER STOPPERS.
the first story left me SHOOK
Loved this video. I show this to my 10th grade chemistry class and then I had them do a class project of teaching the class about lab safety. Give it s try and see how you like it.
I've always wondered what eyewash station and shower looked like in action. Thanks Hank for showing us!
Guys, this is the best Crash Course Chemistry so far, and probably the most important diversion you could possibly make.
8:10 the first Ice Bucket Challenge
Naw fam that was the titanic
true dat
Thank you! This semester I will be showing this instead of the very old yet still true but very boring video that has been shown for years! I love your channel and will promote to all my chem classes from now on.
One time my chemistry teacher cleaned up some hydrochloric acid (just a few drops that landed on the counter) with a paper towel and threw it in the garbage bin. Then he found some dripped sodium hydroxide on the surface and cleaned it up with another paper towel and threw it in the same bin. Acid + Base = explosion, flames, and smoke alarm. So remember kids, always know what you throw away in your trash bin XP
Thank you for this video. I have a lab safety quiz in my Chemistry class tomorrow and I didnt know if I'd be able to remember all the info. This video broke things down for me and made it simple. Im much more confident now that I understand the rules.
I'd like to take a moment to appreciate the fact that he is wearing a potter puppet pals shirt.
Noticed that while watching this at school.
You might be a nerd fighter!
I scrolled down the comments to find someone who mention about the shirt, and i found you!!!!
HUFFLEPUFF
Perfect timing! I'm about to start a Physical Science class for college Gen Ed requirement next week.
I have actually stuck a glass rod through my hand, but not how Hank described it. I was 14 and my science teacher was talking about how the kind of glass it's made of can't hurt you. So, determined to prove him wrong, I took a glass stirring rod, broke it and then forced it through my hand. I didn't expect that it would actually go through because the edge did feel blunt, but it sure as heck did go through like a hot knife through butter. I told my teacher and all he did was tell me to go to the bathroom to clean it up. So I trailed blood to the bathroom and wrapped it in toilet paper for the rest of the day.
😱😱😱 WHAT KIND OF A TEACHER IS THAT!
You know you can sue him, right? And the school...
I wish I could for your own benefit if nothing else, but I did indeed track an impressively crimson chain of blood drops to the science-wing bathroom. Mind you this was nearly 20 years ago, so many subsequence stirring rods have been manufactured thus far.
+Nothing\ well i think we all have our own little stories. I once jammed, and I kid you not, a needle into my palm. The needle, thankfully only contained some deionised water but imagine if it contained, say hydrochloric acid...
John Yyc I've actually stuck a long thin needle through my palm. Also gave myself the biggest bruises ever setting up IVs with absolutely no knowledge of how to do them.
u are very brave
This video should be used in every chemistry class.
5:30
My college doesn't have those.
We have to use our mouths
And yes.
I did accidentally get something in there.
wut was is
Science teachers should show this to students new to labs. At my collage so many students in my bio lab didnt know lab safety and the teacher never taught them. They had food and drinks around and the girls had their hair long.
I'M SORRY BUT I LOVE YOUR POTTER PUPPET PALS SHIRT!!!!!
That's all I could focus on the whole time
You're not the only one. That is the first thing I noticed too!!!
Another tip for forcing glass through stoppers: Hold the stopper between your palm and a table. Roll the stopper a little back and forth while forcing the glass rod or tube through with your other hand.
i'm still so mad about that guy who trashed your samples. what the hell was he thinking i wanna go back in time to demand answers and make him admit he just didn't like you or something
I enjoyed hearing the stifled laugh of Michael (I think) in the background at 2:03 after Hank uses the Eye Wash Station...
The Emergency Shower Challenge - It should be a thing.
Hi
It's a spring-powered pipette... you can adjust the tension in the spring up in the button and it will take and dispense the volume you set it to.
They're a little on the expensive side though, so bulbs are much more common.
Watched it today in Biology. Fan girled
So did I!!
We just watched this video in my 10th grade Chem class today. I literally almost shouted "HOLY CRAP IT'S HANK" in front of everybody. But, all my classmates did love your jokes. Plus, they all laughed hysterically at you using the eyewash station and drenching yourself in the shower :) Keep up the great work.
This showed up today in my intro to engineering tech class
:O Is crashcourse following my syllabus?! Every time I see an upload, it's the exact same chapter my teacher is teaching me! Today is my first day doing a practical for Chemistry and I just saw this video! Is it just a coincidence or something more?...
I'm a Singaporean student studying the GCE A-Level syllabus
my teacher required us to watch this before our lab
This video always reminds me of that one episode of Bones (the first Christmas episode) where they get quarantined in the lab because Hodgins wasn’t following lab safety protocol😂 Zack and Hodgins racing to the decontamination shower gets me every time😂😂
yes! I can't wait to take my pants off in lab!
if you spill on lap, that means the boxers must come off >:(
I've always wanted to see a chemical shower used. I can now die happy. Thank you, Hank.
One I feel should be mentioned, never wear contact lenses in the lab, some organic solvent can cause them to literally fuse to your eyeball!
I feel like Hank would be the coolest lab TA ever
Not very relevant note on the hair rule: it was Christmas mass in church and I don't know if everyone does this Christmas Eve but we light candles at a point during the mass. Everyone has their own little stick of a candle that they hold and pray for both baby Jesus and in hopes that the wax doesn't drop onto their fingers. Anyway, my aunt's hair once caught on fire in the middle of everyone being quiet and solemn and praying so yeah. Not relevant but I thought I'd share.
Mary Kate Picketts My paranoia is now made valid
MK a
Quick fix for destroying that surface tension: put a thin rod over the top of the container and pour along the rod (glass stirring rods work well). Surface tension will instead follow the rod to its tip, taking the liquid wherever you want it to go! This way allows you to pour really slowly if you only need a little bit, or happen to be a timid lab user.
NO WONDER HE LOOKS SO FAMILIAR, HE'S JOHN GREENS BRO WHOA
issy s NOOOOOOOOOOOO!!!!!
wait, you seriously didn't see hank in biographies of john green?
As a guy who works in Hazmat for a living, I'm glad you guys had a safety video. There are some right nasty chemicals out there.
His T-shirt says, 'Alas, a Cornucopia of Love.'
Let's not forget that it has the potter puppet pals on it!
My favourite CCC episode so far!
I wanna try the shower too but not coz of an emergency. Just for fun 😂!
Seriously my fav episode love the commitment Hank!
Hey Crash Course people, can you please update this video? There are some issues with it! (disclaimer: I teach college level organic lab, hello my students who I told to watch this video!) (1) Hank doesn't wear goggles and he keeps touching his glasses with his GLOVED hands...a no-no in lab! Take your gloves off to scratch your nose or adjust your glasses! (2) Lab Safety is going away from the hazard diamond to GHS pictograms, hazard classes and categories so this should be updated. (3) DILUTION IS NOT THE SOLUTION the EPA will fine you a bazillion dollars. In research labs it is against the law to dispose of anything with a pH > or = 12.5 or < or = 2 in any other way than as hazardous waste.
Well he did say it's for some chemicals like common acids. Most common acids in labs are diluted by default. He did say others should be properly disposed of.
I love Crash Course. Eventually it's just gonna be Course. Best educational series ever.
The lab I'm an intern at has an emergency shower... I've always wanted to know what it looked like when showering xD
I have found my favorite Crash Course video.
billy was a chemists son but now he is no more what he thought was h2o was h2so4 hey
I want to use this for work! get this guy in the classrooms...kids would love Hank!
"Pulminary Edema...Death..."
Lol
I loved this video. I think all first time lab noobs should watch it. It is informational, covers all the emergency protocol and station purposes, but it is much more entertaining than what they normally make you watch! Some of my funniest stories from college were set in a chem lab. I was the "lucky" student that Murphy's law have a field day. The TA's nicknamed me Trouble. If you ever need to know how to evacuate a building while doing a titration let me know. I have that one figures out!
HOLY MONKEY BE CAREFUL!!!!!! XD
Good for you, after 12 years of lab work i've had my eyesight saved a number of times by wearing proper specs
6:20-6:22. See which finger hank is pointing
I hope a lot of instructors take this video and use it because it is as, if not more thorough and useful than in class lectures I have recieved
Also I have never seen a safety shower or eye wash used and I have been in labs for years
So should I not pour this strange liquid onto my hand, lick my fingers and then put it on a hot plate?
You got it all wrong, put it on the hotplate, then pour it onto your hand and lick your fingers.
The MSDS system is being replaced soon by a new system that conforms to international agreement on chemical hazard warning and information communication.
It's basically just the MSDS slightly tweaked and formated to conform to the new standard. And it will no longer be called MSDS.
The new format is cleaner and easier to read and standardized, so all of the sheets from every manufacturer will have the same layout.
My Bio teacher accidently dumped a strong acid on her pants on college... it didn't end well.
Hanks in a chemistry lab, sometimes you're worse off wearing a labcoat in there. They're meant to protect you from powder and particulates(like bacteria et al). Not from supersonic bits of pyrex from the flask that's exploded, it's not a flak jacket. most industrial centres do insit on them though as 'proper PPE'