NurdRage - 2016-08-29
In this video we demonstrate the Aspirator Vacuum Pump. A very important piece of lab equipment for generating a vacuum. It's very cheap and ingeniously simple by using the venturi effect to harness the power of a high speed water jet to create the vacuum. Because of such operation, it's very resistant to chemical degradation unlike more powerful rotary vane pumps. Glassware generously provided by http://www.alchemylabsupply.com/ Use the discount code "nurdrage" for a 5% discount. Donate to NurdRage! Through Patreon (preferred): https://www.patreon.com/NurdRage Through Bitcoin: 1NurdRAge7PNR4ULrbrpcYvc9RC4LDp9pS Social media links: Twitter: https://twitter.com/NurdRage Facebook: https://www.facebook.com/NurdRageYoutube/ Instagram: https://www.instagram.com/nurdrageyoutube/ This video generously sponsored by my patrons: Only HR advisable Michael Zappe Emil Mikulic Alex S. Meshal Al-Enazi Lord Martin Hill Matthew Brunette Max Loutzenheiser Collin Wright Simon Bitdiddle Cullen Purkis Carl Potter Phillip Hutchings Dror Kronstein Michael Gregg Syam Krishnan Nick Kinnan Kenneth Sheppard Robert Boll Roger Ben Anderson Nick Kinnan doug dysart Matej 'Yin' Gagyi william tips Ray Daniel Astbury Shutaro Highwind Tim Waterhouse Stephen Stair Bobby Nansel Andrea Nall Dom Vasta Tyler Bushey Michael Mark Rose Marius KlimantaviÄius Dino Capiaghi Gabriel Jeantelot Jacob Gruber Antton Tapani Samuel Pelzer Myndert Papenhuyzen Wesley Gardner Martel DuVigneaud Kremling Brian Nietfeld Jean-Marc Bélisle Leon Verrall Feliksas Tyler Barnes Egan Loughran George Jefferies Syniurge evan Efe Efevich Applied Science Yuli Talyansky Micha Gorelick Hanna Anderberg Marcio Yukio Teruya Timothy Vincent Jack kelly Laird Rixford Raymond Fullon Michal Z Florent Parent Jad Abu Odeh Thor Danny Chan Miguel-Angel Gutierrez Casey Kikendall Shawn Rickman David Drueding Kay Bærulfsen Alec Posney Craig M. Matt Bryan Boettcher Alex Wilson Mark Beeunas David Justin Brown Craig House Ross Clark Shreyansh Pandey Jordan Damien P Kevin Croissant Daniel Henneberger Akshay Joshi Rob Parker Robin Beckett Kamen Milchev James McIlhargey LVE Donald W Henry Wu Ricardo Hy Diep John Wasser Jeffrey Morse Braxton Thomason Ã…smund Tveten James Dugan CNK054so Leonard Marshall jMe4505 Timothy Glore Pablo Soares
I love these type of videos!
Me too!
Me three
Maybe i'll concentrate hydrogen peroxide or sulfuric acid with this system. Anyway, I'm still remaking all the chemicals for the pyrimethamine synthesis so that's taking awhile. i'm not sure when the next video for that will be up. Next immediate video might be something on matches, we'll see.
On a different note, good luck to all you students who will be returning to school/college/university soon.
To be perfectly clear what my claim is: I think any resistance to the flow after the aspirator will decrease the pressure differential between the back and front of the nozzle, since the flow is decreased from some theoretical maximum. A piece of tube would, it seems, provide such resistance. It seems to me like the optimal setup is a vertically placed apparatus, and at most a short piece of tube. Not sure how much difference it makes in this case. Maybe the difference is negligible. Maybe you also positioned the tube deliberately like that to create an airlock.
Difference is negligible, It's a pretty big tube. maybe tubes with smaller diameters would be a problem
Well I will certainly keep this question in mind in the coming days. So far the TAs have been nicer, and the instructor less of a ...jerk, overall, but I shall see if this continues or not. Thanks again for the support and the reply!
NurdRage would multiple pumps like this or a combination of pumps work better like say 2 of these drawing the same vac line or the diaphragm pump in line with this.
Distilling sulfuric acid is actually great for this sort of thing. Means you don’t need a heating mantle
I can just feel my gear acquisition syndrome kicking in!😉
lol would love water boiling in container from heat of my hands
What a great video.
so educational 😊😊
Thanks!
@NurdRage Welcome :) Your videos are all educational. :)
Is it possible to connect this aspirator to a pressure washer? Lol
I learned some shit today.
Thanks: I wondered about the relationship between pump water temp and vacuum, but never looked into it.
Cheers,
Mark
**********************************
Mr. NurdRage,
Thank you for this video, we need more people like you
My first thought when mentioning a low vapor pressure working fluid was mercury, my second thought was no, not mercury.
There is something called a "mercury diffusion pump" which does take advantage of mercury's low pressure. But it works on a totally different principle to the aspirator pump.
Why is that's a bad idea?
Many reasons, aspirator pumps made in aluminium will be soluble in mercury, many salts and oils will react with mercury, you will need to keep your mercury clean to prevent clogging and it will be an unnecessary level of toxicity when you think of the cost of buying enough mercury for the job since you could go for another more expensive vacuum pump.
Also note, mercury is toxic but it's generally more toxic when it is mixed with other chemicals.
Amazing, you deliver once again, thank you sir!
Cross the streams!
This is an awesome video, exactly what I was looking for; thanks a lot
What's the male thread pattern on the aspirator inlet? I've found the same pump (10mm male) but need to know the adapter size you have there in brass.
It appears to be 1/4" NPT-F. I can find no adapter at a reasonable price ($380.00). I am going to grind the threads off of a standard adapter and epoxy it into the provided fitting.
I have the same pump and it’s a 5/8 threading. My humboldt aspirated is 3/8 and I don’t really know what to do about this since I can’t find an adapter for that.
I've done this sort of thing before with a similar setup. It never occurred to me though, to use ice water. It makes a lot of sense now that I'm thinking about it. Thanks for the tip...
Color me impressed! Thank you for the video.
This is amazing. I'll feel like an idiot for never considering this method of distilling water with safe non dangerous methods like by the heat of the sun. The problem has always been that you need high heat from a fire or very concentrated head from the sun using a Fresnel lens. Not common enough of an item and not available to ppl who drink toxic water because they can not afford to filter it. This method could very easily be converted to work off nothing but a river or streams natural movement. Even the oceans waves could be used to effect a pump I imagine. In the US we don't have much need of this, but I imagine a time when we will all need to distill our drinking water.
Very useful information. I wish I was taught this in my chem undergrad
Distilling water at 39°C with your set up is impressive ! Well done :)
It gets BETTER! :)
Oh god I just watched the rest of the video: 19°C??? This is crazy !
Reminds me of our air supplier in our aquarium
Will you use this for the pyrimethamine synthesis?
@nurdrage How would an ionic liquid serve to lower the pressure, more specifically could there be a possibility of reaching a near perfect vacuum? The vapor pressure is significantly lower than every other liquid. I know in practice it is a really expensive "solution" but I think the novelty of it would be worth the cost.
Thanks for the video, about 10yrears ago I was trying to concentrate H2O2 from 50% to around 80% with a home made aspirator pump. But at the time I was just using water from the tap so was limited in pressure. So I might have to try this again with your setup.
You could also direct the waterflow from the pump through your destiller first, in order to save some more water :)
Also you could add icecubes to the mix to keep it very cold!
EDIT: Oh, seams like you did exactly that :)
I actually had two separate water circuits. As said the video i strongly recommend against pumping the contaminated through your condenser.
Heyy NurdRage :^)
Thanks for the great video! I want to use this cheap vacuum set-up for ethanol, and it seems perfect for that, but I want to be able to distill at a temperature of my choosing (between say 35 - 50C with a rotary evaporator). So my question is: Can you vary the pump speed to give a certain vacuum, or do you always have to use the ultimate vacuum strength, (which is what you seem to do in the video)?
this vid' is exactly what i needed. esp' the part about using a tub & pump to re-circulate the water.
my need is to reduce the amount of water in an acidic plant extraction. as well as other
distillations of solvents to recover the extra solvent beyond what was needed to dissolve
the cd's of interest.
i've known of you for several years now. and held off being a patron for a lack of see you
using a spectrophotometer to monitor an experiments progress. as well as to show
us how one can be used to determine distribution-coefficients of liq-liq extractions.
and now , never mind all that, you deserve my support anyway. the next step ... reach
for my wallet
While watching I was thinking it would be a good way to make sulfuric acid.
great video learnt a lot thankyou!
Oh my god that was a perfect video
1:35
"It also has the advantage of being very robust chemicals."
One more time, but in English?
+NurdRage I can't hear anything else
Keep listening. :)
or turn on the subtitles
Try the half-sped version then.. it was more of a "robusto chemicals", but its perfectly audible at standard speed ;)
I'm not english native and it was absolutely no problem to understand.
Even if you didn't hear it correctly... everybody watching chemistry videos should get it from the context. Or he shall not watch chemistry videos!^^
That's one small step for a'man...
Any links for the items mentioned for this setup? Or names of the items? Cheers!
"Aspirator pump"
"12 volt diaphragm pump"
"12 volt power supply"
"vinyl tubing"
"Storage bin"
"Water"
"ice"
I can clearly see the pump and the aspirator, but exactly what adapter
are you using to connect the two? Please do tell and I will donate!
now how do you go about regulating vaccum like for applications like a rotavap
NR, where've you been on ScienceMadness?
im getting hooked!
Great video, very usefull information!
Thank you for the video and for all of your help so far! I promise this is my last question for you. Is the barometric pressure where you live relatively low? Where I live, the pressure is at 30.24 in hg. I am thinking that this is why the set-up isn't working for me.
Not really, it's very close to sea-level pressure where i am.
what is the maximum vacuum gained by the aspiration pump. What kind of aspiration pump that i have to buy
Wow i had no idea this simple principle is capable of making a vacuum this good.
@NurdRage After seeing this video I'm curious about experimenting with different fluids at cooled temperatures to see what works the best. Some dry ice will get acetone pretty cold, but would it be safe with that pump, or is there a special pump that would be needed to circulate acetone?
I'd like to see if that pump could work with relatively cheap 0w20 synthetic motor oil.
if i have a 26.4w and 3l/min. 5.5bar(80psi)pump is good to make vaccum pump ?
NurdRage is these ok?
I used those pumps in lab by just connecting them to faucets. I always hurt my heart to waste clean water like this. Cooling is often done in the same way. I guess people don't care about cost if the institute/university pays for it.
Anyway 22 mbar is very nice vacuum for such a simple system. Getting lower might be scary lol
Or then you live in a civilized country where tap water is drinkable and cheap as air.
you can extract lysine from organics and transform in lysine hydrochloride?.
Organic as fruits and vegetables.
2 videos that I'd like to see here.
lysine production and thiocyanate production.
urea It would also be good.
That is honestly brilliant.
What is that brass threaded adapter you've got between the pump and aspirator, and/or where might I find one?
Some type of compression fitting i got at the hardware store. It matched the threads of the aspirator pump so i went with it.
NurdRage could you please check the size of the fitting? 1/4” NPT to 3/8” NPT reducer?
Do a face reveal!
where can I get these six dollar pump
A very useful video, thanks!
Cody'sLab - 2016-11-23
"I wonder how mercury would do if run through an aspirator pump" -- dangerous thought of the day
robb pratt - 2019-02-14
everything comes from the earth we live on everything. just think about that
Jay Bee - 2019-02-23
@Jared Lancaster One could be machined out of steel very easily. A buddy of mine has a lathe and cnc. I could make one of those in about 3 hours, even with my lowly knowledge. and I was thinking of making a sprengel valve with mercury and try this. I have vacuum oven that needs some repair and that would make a great vacuum for sputtering metals.
cranebeg - 2019-02-25
@Jay Bee The one I just bought is stainless steel. Good old China ;)
NOBOX7 - 2019-04-18
Bro you need to chill with the mercury , we need your brains
William Partridge - 2020-03-09
and so the Sprengel vacuum pump video was born