Sciencemadness Discussion Board - Looking to buy a Buchi Rotavapor M Condensor

Looking to buy a Buchi Rotavapor M Condensor

Picric-A - 7-9-2009 at 07:40

I have recently bought off Stateofhack a Buchi Rotovapor M however it did not come with the condensor.

Has anybody got one they are willing to sell?

Alternativly does anybody know where i could buy one?

I am located in London, England.

Many thanks,

entropy51 - 7-9-2009 at 08:00

I have one I will trade you for some bromine and a fume hood.

https://www.sciencemadness.org/whisper/viewthread.php?tid=12...

[Edited on 7-9-2009 by entropy51]

Picric-A - 7-9-2009 at 08:19

haha

hissingnoise - 7-9-2009 at 08:31

Normal for Norfolk. . .

Sorry PA; temptation, you know.

[Edited on 7-9-2009 by hissingnoise]

DJF90 - 7-9-2009 at 09:49

I have this model rotovap, BNIB

panziandi - 7-9-2009 at 09:56

I looked into this and spoke to Buchi rep regards the M series, they couldn't even locate me a manual, so I doubt the glassware is available. If I recall correctly the M series was a micro series designed for 50mL flasks or so, and had unique glassware. Buchi glassware is expensive at the best of times, let alone when you have to find glassware for a model that's no longer supported.

DJF90 - 7-9-2009 at 09:58

Luckily I dont have to find my glassware. The seals that are needed bewteen the screw joints are probably just as hard to find, although mine came with spares so its all gravy. And panziandi - the distilling flask is 250ml, as is the recieving flask. I have some pictures around here somewhere...

panziandi - 7-9-2009 at 10:00

Ah well 250mL flask, not that big, I do love my R-series tho

Picric-A - 7-9-2009 at 12:02

Wow panziandi didnt insult me... we are making progress

@Panziandi - I emailed Buchi and they said they could aquire me one. so if all else fails i go with that but like you say it will be expencive.
How big is your R-series? 250ml is good enough for me, i only ever work on 10g scale ish, but i agree the waterbath seemed smaller than i expected!

@DJF90- have you had any probelms with your model? i.e. is it reliable? how long have you had yours for?
What are the seals you mention? i must look into this aswell obviously

edit; the ground glass on the rotovap is 14/23 size so surly a connector can be attached to connect it to any size flask (providing you use a larger water bath.)

[Edited on 7-9-2009 by Picric-A]

Picric-A - 7-9-2009 at 12:11

This is what Buchi sent me. I am not sure out of that what i need to buy so Stateofhack, if you read this, please could you tell me if it has all of the above (exept the condensor of course).

Thanks

DJF90 - 7-9-2009 at 12:21

R-series is standard size in an undergrad organic lab, but you wouldnt know about that. The waterbath happily accomodates the 250ml florence flask, and I have no doubts that even a 500ml flask could be used. The model comes with a B14 connector also to enable use of quickfit flasks. As I said upthread its BNIB, I only assembled it to check I wasnt missing anything, and I didnt try it as a) theres no need to - I could see its brand new and b) I couldnt be bothered to fit plugs to it.

EDIT: That picture is a poor image. Better quality please?

[Edited on 7-9-2009 by DJF90]

Picric-A - 7-9-2009 at 12:22

Sorry what does BNIB mean?

DJF90 - 7-9-2009 at 12:23

BNIB means Buy New In Box...

Any chance of better picture quality?

[Edited on 7-9-2009 by DJF90]

panziandi - 7-9-2009 at 12:34

Yes they had scans on the bits, but the woman I spoke to seemed to think that having any spares would be extremely unlikely seeing as the model is something like 25 years old (perhaps older!). The spares aren't listed on the Buchi site nor do any of the regular traders of Buchi list the M-series parts. Of course they probably do have spares for engineers but I wouldn't hold my breath. BTW if you only have the motor and bath you will need ALL the glassware, seals, gaskets, and fittings.

DJF90 - 7-9-2009 at 12:42

I seem to remember it being a 1970's-80's model. I cant remember what year production commenced or ceased, but its a fair assumption that the parts aren't lying about any more. If anything you could have one custom made, but I would expect you could get a new rotovap for that. There was a Bibby one on Ebay for £199.99 BIN that came with condensor but no waterbath. You're right in saying that Picric-A needs the rest of the glass and the gaskets, the joint connector(s) and also possibly also a new seal, depending on how used the rotovap is. Mine came with a few spares but theres no way on earth I will part with them.

Picric-A - 7-9-2009 at 12:43

This is what i have;
http://www.sciencemadness.org/talk/viewthread.php?tid=12673#...

I think the only glassware i need is the condensor and two flasks but as you can see in the outline pics i posted the condensor looks like ti doesnt have the vaccum fitting so im stuck on that...

Thanks for your help

DJF90 - 7-9-2009 at 12:49

If you could post a better quality image of the document above then we can help you more...

entropy51 - 7-9-2009 at 12:50

Quote: Originally posted by Picric-A

Wow panziandi didnt insult me... we are making progress

Monday is not panziandi's assigned day. We had to divide it up into shifts to provide adequate coverage for the three of you (Picric, Saber, and Labxyz).

When are you gonna post the pics of your contact process?

Picric-A - 7-9-2009 at 12:57

Quote: Originally posted by entropy51

Quote: Originally posted by Picric-A

Wow panziandi didnt insult me... we are making progress

Oh ok, well you wont be seeing my other personnalities for a while, as my contact plant. I am back at school now, so 6 weeks till im home again

then i can post everything.
Why are you so impatient, i cant remember who but someone else posted pics on their attempt at oxidising SO2 using V2O5 and theirs looks much better than myn. Myn is just a SS pipe (sulphur burner) with a glass tube comming off wound in NC to heat it to the correct temp with the cat inside followed by 3 conc H2SO4 absorbers.

@DJF90 - cool i will try, the problem is the orgional doc., is too big so i had to resize it.

[Edited on 7-9-2009 by Picric-A]

DJF90 - 7-9-2009 at 13:02

Attach it as a PDF

I think Entropy's point is that you're claims concerning the contact process plant are bullshit. Fleaker was the "other guy" doing this project IIRC, and he found it hard to get respectable yields, so we hardly doubt you, a 14 year old child (or is that just labxyz? I suspect you arent much older than that otherwise) could rival the industrial yields. To think you had me fooled for a minute is embarassing.

Picric-A - 7-9-2009 at 13:06

take 2

Sorry i dont knwo how to make PDF's

[Edited on 7-9-2009 by Picric-A]

Picric-A - 7-9-2009 at 13:09

Quote: Originally posted by DJF90

I think Entropy's point is that you're claims concerning the contact process plant are bullshit. Fleaker was the "other guy" doing this project IIRC, and he found it hard to get respectable yields, so we hardly doubt you, a 14 year old child (or is that just labxyz? I suspect you arent much older than that otherwise) could rival the industrial yields. To think you had me fooled for a minute is embarassing.

Yea i know people think its bullshit but idgas, people are quick to make assumptions, ill live with that!

DJF90 - 7-9-2009 at 13:10

That document is not helpful. Looks like you are out of luck. The picture of the condensor is not complete - I see parts missing.

Picric-A - 7-9-2009 at 13:11

does the ocndensor you own have a vaccum tap attached ect?

DJF90 - 7-9-2009 at 13:12

nope - thats a separate peice.

entropy51 - 7-9-2009 at 13:13

Quote: Originally posted by Picric-A

Yea i know people think its bullshit but idgas, people are quick to make assumptions, ill live with that!

It's not an assumption. We've seen you caught in all kinds of lies and shady transactions.

Have you forgotten your research lab license? We haven't.

Picric-A - 7-9-2009 at 13:26

Fine whatever believe what you will.

can we go back to topic now?

DJF90 - 7-9-2009 at 13:27

What more is there to say? What else do you want from us?

kclo4 - 7-9-2009 at 13:28

When you spell myn, do you mean mine?

Picric-A - 7-9-2009 at 13:29

I was hoping somebody could point me in the right direction on where to purchase the parts i need, apart form Buchi itself

DJF90 - 7-9-2009 at 13:31

We've told you that these parts are rare/scarce, or are in use. Best bet is to keep an eye out on ebay for someone selling the set of glass you need. And kclo4: yes he means mine, he's just using k3wl language :/

Picric-A - 7-9-2009 at 13:34

The sheet i uploaded doesnt show the vaccum adapter, do you think you could post a pic of yours DJ?
thanks,

kclo4 - 7-9-2009 at 13:36

All right, I noticed it before in a thread I was skimming and wrote it off as some sort of brand haha and I just wanted confirmation that he actually meant mine.

panziandi - 7-9-2009 at 13:36

Picric-A if you can't get them form Buchi the only option left is keeping an eye open for them on surplus sites. Possibly Buchi does a glassblowing service and maybe able to make you the parts, although expect to pay something like £250 for the condenser!!!

DJF90 - 7-9-2009 at 13:40

And then he needs flasks too, and the gaskets/connectors/seals. Sounds like an expensive job.

Although having the condensor made at the glassblowers allows you the option to do away with 50% of the gaskets and screw joints, as you can replace one with a standard taper (the vac. release valve) and the other with a spherical joint (as common with rotovaps for the collecting flask). However these will require some kind of vacuum grease to ensure a good seal.

[Edited on 7-9-2009 by DJF90]

Picric-A - 7-9-2009 at 13:43

Nope the flasks are simple quickfit flasks for the boiling flask, i have no clue what i need for the reciving flask. but yes its gonna be expencive. How much did you buy your m-type for DJ?
Thanks Panziandi

DJF90 - 7-9-2009 at 13:48

You're wrong unfortunately. The standard taper piece you have there screws in, and is used as an alternatice to the screw threaded distilling flask I have. I know because mine (note: spelling) came with one. Try it, you can screw it out. There should be a white PTFE washer in there too. You need 3 of these for sufficient sealing in the whole glassware setup (one for collecting flask joint, another for the vacuum release tap joint).

Picric-A - 7-9-2009 at 13:52

Quote: Originally posted by DJF90

You're wrong unfortunately. The standard taper piece you have there screws in, and is used as an alternatice to the screw threaded distilling flask I have. I know because mine (note: spelling) came with one. Try it, you can screw it out. There should be a white PTFE washer in there too. You need 3 of these for sufficient sealing in the whole glassware setup (one for collecting flask joint, another for the vacuum release tap joint).

Wrong about what? sorry i dont quite understand. Does that mean i cant use a standard quickfit 14/23 flask with the rotovap?

DJF90 - 7-9-2009 at 13:54

Sorry I should be more clear. Although you have a 14.5/23 ST joint on there, the rotovap was designed for use with a threaded flask. You should have no problems using a B14 flask on there, but I think you have slightly bigger obstacles to overcome first...

And you also need the collecting flask which is threaded, hence my comment about having a custom spherical joint put onto your custom condensor (if and when you have one made).

[Edited on 7-9-2009 by DJF90]

Picric-A - 7-9-2009 at 14:08

Oh ok thanks for the clear up DJ, looks like ive got a long w8 ahead of me before this thing is operational!

DJF90 - 7-9-2009 at 14:26

I think you underestimate the complexity of the apparatus. I have pictures but they are far to big to post. And a bit blurry in instances. But panziandi has seen them and he can testament as to how much work this is going to need and also how much it will cost.

Picric-A - 7-9-2009 at 14:31

kk i understand. Thanks for all your help everyone, especially DJ!

stateofhack - 8-9-2009 at 06:45

Hello,

Sorry for the late reply but i have been away, the glassware i had seen some on ebay (uk) not too long ago! I also saw some ob labx i think. Its hard to find like everyone said! What you might look into is getting it custom done, ask a few companies and stuff (Buchi usually give out size and measurements of the flask with no trouble, otherwise just say you need them because your one is a bit broken and you need the dimensions for the glassblower.

Either ways, its a bitch to find glassware for this baby! But it is really nice

Like Andy, i will stick to my other rotovap

chemrox - 8-9-2009 at 16:02

If you'll thrown in a Vincent Black Shadow I'll offer and extra heating bath

entropy51 - 8-9-2009 at 16:09

The band or the motorcycle??