|
JB50 posted:It was like a mini 9/11 reenactment. I thought it was just hard core Jenga.
|
# ? Dec 11, 2015 00:45 |
|
|
# ? Jun 8, 2024 08:57 |
|
Say Nothing posted:Edit: Where can I get a big chunk of caesium? Don't drop it.
|
# ? Dec 11, 2015 02:12 |
|
On that note: Does anyone know of a good site or guide regarding chemistry glassware - namely, why everything always looks so fragile and dangerous and yet somehow obviously purpose built?
|
# ? Dec 11, 2015 02:16 |
|
Think of it like commercial bakeware, there are crappy measuring spoon sets made of micron-thin metal that sell for $1, and there are thick stainless steel sets that go for $30 but will last a lifetime. Both look about the same at a glance, but when you're actually handing them the difference becomes obvious.
|
# ? Dec 11, 2015 02:24 |
|
Fasdar posted:On that note: Does anyone know of a good site or guide regarding chemistry glassware - namely, why everything always looks so fragile and dangerous and yet somehow obviously purpose built? A lot of them are blown glass, so they can't be too rugged. That's a big fuckoff ampoule, and those are usually pretty tough. You basically take a glass tube in an inert atmosphere, fill it with whatever you want, then torch off the end and let it cool to seal it. To open it, you snap off that bit at the neck and if it's well-made it'll be a clean break.
|
# ? Dec 11, 2015 02:25 |
|
That design above just looks destined to fail though. Drop it onto the tip and the narrowest/smallest part of the glass has to take the load. I trust you that they're sturdier than they look, because they don't look very sturdy at all.
|
# ? Dec 11, 2015 02:25 |
|
Separatory funnels were always a lot of fun in my chemistry classes. All the videos I can find involve people using them properly, I want to see one of the big fuckers explode from vapor pressure.buttcoinbrony posted:That design above just looks destined to fail though. Drop it onto the tip and the narrowest/smallest part of the glass has to take the load. I trust you that they're sturdier than they look, because they don't look very sturdy at all. I'm pretty sure they don't let you touch the $40,000 ampoule of pure caesium if you're the kind of person who's prone to the dropsies. Nerses IV fucked around with this message at 02:41 on Dec 11, 2015 |
# ? Dec 11, 2015 02:30 |
|
Nth Doctor posted:
Put it in a box of rocks and throw it off a cliff into a lake! Something like this... https://www.youtube.com/watch?v=HY7mTCMvpEM
|
# ? Dec 11, 2015 02:45 |
|
I'm pretty sure that Cesium ampule is specifically designed to break at that point, which you do under controlled conditions when you need to get the cesium out for whatever reason. My wife has a sizable collection of lab glass. It's generally hand-blown, but of Pyrex or similar very strong glass. Some of it is made in molds, especially beakers and flasks. It's tougher than you might guess just by looking, althou you can definitely still break it if you're not careful.
|
# ? Dec 11, 2015 02:53 |
|
I came across this https://www.youtube.com/watch?v=PC3o2KgQstA trying to find fun chemistry stuff.. Kind of makes that sulfuric acid + sugar trick look like babytown frolics.
|
# ? Dec 11, 2015 02:58 |
|
Alternate title: How to make cthulu dookie
|
# ? Dec 11, 2015 02:59 |
Don't you also score the neck to ensure a clean break?
|
|
# ? Dec 11, 2015 03:00 |
|
Sagebrush posted:It probably wasn't as bad as it appears. Lithium in water doesn't really "explode", it just burns quickly and brightly. The glass probably shattered from the heat, not from a detonation. Doesn't increasing the surface area of the reactants (in this case lithium and water) accelerate the reaction?
|
# ? Dec 11, 2015 03:03 |
|
And we're back on track.
|
# ? Dec 11, 2015 03:06 |
|
SynthOrange posted:
How do you make sure you don't get chunks of broken glass in whatever you're chemistry-ing?
|
# ? Dec 11, 2015 03:08 |
|
Three-Phase posted:How do you make sure you don't get chunks of broken glass in whatever you're chemistry-ing? Just reach into the solution and pick them out like egg shells when you're cooking. Duh. Or maybe you just get good at it and don't open them over whatever it's being poured into. Probably results in less serious chemical burns and toxicity that way, too...
|
# ? Dec 11, 2015 03:13 |
|
I was just reading that and the answer is 'you dont'. http://www.scielo.br/scielo.php?pid=S0034-70942011000400013&script=sci_arttext&tlng=en SUMMARY quote:BACKGROUND AND OBJECTIVE: Glass ampoules have been widely used in packaging injection drugs. Glass has important characteristics that allow it to be widely used in fabrication of recipients for drugs and other sterile substances. However, contamination of solutions with glass microparticles on breaking open glass ampoules, the presence of metals, percutaneous injury, and biological contamination justify the need of educational materials to orient the manipulation of ampoules.
|
# ? Dec 11, 2015 03:14 |
|
Don't worry, those aren't just used in chemistry, they're also used for certain medications in pharmacy. Have fun thinking of those microscopic chunks of glass as part of an iv. In reality, you should expect that the chunks of glass do happen, but it's not a giant problem since you use filter needles to take the substance out rather than just dumping the contents http://www.atitesting.com/ati_next_gen/skillsmodules/content/medication-administration-3/equipment/ampules.html
|
# ? Dec 11, 2015 03:15 |
|
I remember hearing that some chemotherapy drugs (drugs that go into your bloodstream) need to be stored in glass because they will eat through a plastic container.
|
# ? Dec 11, 2015 03:18 |
|
Nth Doctor posted:
At first, I thought that was some kind of wacky radioactive quack medical device from the early 20th century because it looks like a buttplug.
|
# ? Dec 11, 2015 03:19 |
|
Well yeah plastic isnt intert. The study I linked has more details on plastic as an alternative to ampoules and because it's not inert like glass it slowly reacts with drugs stored in it.
|
# ? Dec 11, 2015 03:19 |
|
Seems like you're inevitably going to mess this up at some point; getting the tip in without touching the sides is easy enough, but then you have to keep the needle perfectly still while you're pulling back on the plunger. Is this easier than I'm making it out to be, or is there a trick I'm not thinking of?
|
# ? Dec 11, 2015 03:22 |
|
buttcoinbrony posted:Seems like you're inevitably going to mess this up at some point; getting the tip in without touching the sides is easy enough, but then you have to keep the needle perfectly still while you're pulling back on the plunger. Is this easier than I'm making it out to be, or is there a trick I'm not thinking of? Well, medical doctors tend to be pretty goddamn steady and methodical, so it's probably not as big an issue as you're thinking. Periodic Videos might not be OSHA but they sure make some big bangs, and hey they have a video involving an ampoule of cesium! TOPICAL https://www.youtube.com/watch?v=b2YrZNahqiw money shot ~2m if you're impatient
|
# ? Dec 11, 2015 03:32 |
|
buttcoinbrony posted:Seems like you're inevitably going to mess this up at some point; getting the tip in without touching the sides is easy enough, but then you have to keep the needle perfectly still while you're pulling back on the plunger. Is this easier than I'm making it out to be, or is there a trick I'm not thinking of? I manage it all the time using a blunt tip to fill fountain pen cartridges and I'm no medical professional
|
# ? Dec 11, 2015 03:33 |
|
So just out of curiosity I figured that amount of cesium is worth about $41000 dollars. Also, what the gently caress happened to the price of this stuff in 1992? http://minerals.usgs.gov/minerals/pubs/historical-statistics/ds140-cesiu.pdf
|
# ? Dec 11, 2015 03:33 |
|
Zeno-25 posted:At first, I thought that was some kind of wacky radioactive quack medical device from the early 20th century because it looks like a buttplug. Easy mistake to make.
|
# ? Dec 11, 2015 03:34 |
|
Say Nothing posted:A little research into alkali metals first might have helped. Holy poo poo.
|
# ? Dec 11, 2015 03:35 |
|
DONT CARE BUTTON posted:So just out of curiosity I figured that amount of cesium is worth about $41000 dollars. Also, what the gently caress happened to the price of this stuff in 1992? from that page: quote:From 1959–91, unit value data were estimated to represent the average price of various imported cesium materials of a weight magnitude of at least 1 pound. From 1992 to the most recent year, unit value data were estimated to represent the price of a 1-gram ampoule of 99.98-percent-pure cesium metal. Because of its high purity, 99.98-percent-pure cesium metal has a considerably higher unit value in comparison to the unit value of various cesium materials, such as cesium chloride and other miscellaneous cesium-containing materials. They changed the unit of measure in 1992, that's why.
|
# ? Dec 11, 2015 03:36 |
|
E: welp.DONT CARE BUTTON posted:So just out of curiosity I figured that amount of cesium is worth about $41000 dollars. Also, what the gently caress happened to the price of this stuff in 1992? Well wiki says it's used in petroleum drilling fluids that were developed in the mid 90s, wouldn't surprise me if that's the reason. Plus it's extremely electropositive, so like fluorine it's probably a bitch to isolate (wiki also says its compounds are "significantly cheaper" than the pure element) so that plus high demand = $$$.
|
# ? Dec 11, 2015 03:38 |
|
Three-Phase posted:I remember hearing that some chemotherapy drugs (drugs that go into your bloodstream) need to be stored in glass because they will eat through a plastic container. so will acetone but you can still stick your hand in it just fine (dont do this if you have an open wound it hurts like hell)
|
# ? Dec 11, 2015 03:54 |
|
Raskolnikov38 posted:so will acetone but you can still stick your hand in it just fine (dont do this if you have an open wound it hurts like hell) Scientist man explains: https://www.youtube.com/watch?v=4Rl2NI5MKRw Make sure you wear 1.Safety goglies 2. Rubbly gloves This ones good too, with star wars figures. https://www.youtube.com/watch?v=H1pn4bTAQWA JB50 fucked around with this message at 04:13 on Dec 11, 2015 |
# ? Dec 11, 2015 04:07 |
|
Best part is 2:16.
|
# ? Dec 11, 2015 04:13 |
|
Nth Doctor posted:
Huh, I guess Prometheus was more realistic than I thought
|
# ? Dec 11, 2015 04:45 |
|
Fasdar posted:On that note: Does anyone know of a good site or guide regarding chemistry glassware - namely, why everything always looks so fragile and dangerous and yet somehow obviously purpose built? American Scientific Glassblowers Society. They have some beautifully precise pictures of scientific glass on their Facebook.
|
# ? Dec 11, 2015 07:16 |
|
Raskolnikov38 posted:so will acetone but you can still stick your hand in it just fine (dont do this if you have an open wound it hurts like hell) Acetone dissolves contact lenses. If you don't wear eye protection and get acetone into your eyes while wearing contacts, the contacts will partially dissolve and fuse to your cornea. You'll then need to have them surgically removed. goodness posted:American Scientific Glassblowers Society. They have some beautifully precise pictures of scientific glass on their Facebook. I once visited the glassblower's department of my univ's chemistry faculty. They made a face in a glass pipette and gave it to me. I still have the pipette man. Carbon dioxide fucked around with this message at 11:01 on Dec 11, 2015 |
# ? Dec 11, 2015 10:55 |
|
buttcoinbrony posted:Seems like you're inevitably going to mess this up at some point; getting the tip in without touching the sides is easy enough, but then you have to keep the needle perfectly still while you're pulling back on the plunger. Is this easier than I'm making it out to be, or is there a trick I'm not thinking of? It's easy enough with practice.
|
# ? Dec 11, 2015 11:05 |
|
JB50 posted:Scientist man explains: https://www.youtube.com/watch?v=4Rl2NI5MKRw When I was a kid I once spilled acetone nail polish remover on my lap. Didn't hurt, but it eat a hole in my rayon underwear. That was pretty weird. Looking back, I can't help but wonder if letting little kids play with nail polish and nail polish remover wasn't a bad idea.
|
# ? Dec 11, 2015 16:55 |
|
Angela Christine posted:When I was a kid I once spilled acetone nail polish remover on my lap. Didn't hurt, but it eat a hole in my rayon underwear. That was pretty weird. Looking back, I can't help but wonder if letting little kids play with nail polish and nail polish remover wasn't a bad idea. Acetone is pretty harmless. The worst it will generally do is dry out your skin.
|
# ? Dec 11, 2015 17:01 |
|
buttcoinbrony posted:Seems like you're inevitably going to mess this up at some point; getting the tip in without touching the sides is easy enough, but then you have to keep the needle perfectly still while you're pulling back on the plunger. Is this easier than I'm making it out to be, or is there a trick I'm not thinking of? They make stands that have an ampoule breaker and slots to hold them at an angle that allows you to withdraw whatever is in them easily. It hurts like poo poo when you accidentally jam your thumb down on a shard of glass that broke off into the parafilm you used to seal an ampoule of formaldehyde or gluteraldehyde. Then you get to spend 20 minutes trying to get the bleeding to stop but also wanting it to bleed for a while just in case you got gross poo poo into your blood.
|
# ? Dec 11, 2015 17:27 |
|
|
# ? Jun 8, 2024 08:57 |
|
Carbon dioxide posted:Acetone dissolves contact lenses. If you don't wear eye protection and get acetone into your eyes while wearing contacts, the contacts will partially dissolve and fuse to your cornea. You'll then need to have them surgically removed. huh, well now i'm really loving happy I decided to go for glasses over contacts all those years ago
|
# ? Dec 11, 2015 17:32 |