Sciencemadness Discussion Board

Science equipment looking for a home

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Dr.Bob - 9-8-2017 at 11:59

I will again be traveling for a week plus shortly, so please be patient with me if you email me. I'll try to read emails, but I won't be able to ship for a little while. I will try to get an updated inventory once I return, once the summer calms down.

alchemew - 25-8-2017 at 01:14

I'm looking for a decent heating mantle for a round bottom 2000ml, preferably with a magnetic stirrer. Does anyone have an extra with which they'd part?

Radium212 - 26-8-2017 at 00:40

Do you have any vacuum or high voltage equipment? Or any hydrogen tanks?
Thanks.

Dr.Bob - 28-8-2017 at 15:48

No gas cylinders or high voltage equipment. I do still have some vacuum traps, dewars, and other vacuum glassware. Sorry. I am finally back from travel for a while again, so I will work on answering emails and trying to take inventory of what is left.

HeYBrO - 5-1-2018 at 02:04

Dr.Bob, do you have any microcaps from drummond scientific?

TheNerdyFarmer - 8-1-2018 at 14:55

Hello. Does any one have a borosilicate glass tube with an inner diameter of around 20mm and a length of around 250-300mm that they are willing to sell? I just a plain Jane glass tube. I am using it as a reaction tube. I would like tfo purchase it for a reasonable price. U2U me.

Edit: I may not need, one anymore. A little more research has lead me elsewhere. :D

[Edited on 8-1-2018 by TheNerdyFarmer]



[Edited on 9-1-2018 by TheNerdyFarmer]

Melgar - 8-1-2018 at 15:57

I have something like that, but it's about a foot long. It's also in storage and I can't guarantee I'll be able to find it very quickly. Eventually, yes though.

Dr.Bob - 10-1-2018 at 05:21

I do have some scraps of glass tubing scattered round, and there are some about 20 mm in diam, so let me know if you still need any. Main cost would be shipping, depending on where you are.

highpower48 - 10-1-2018 at 08:32

Looking for a heating mantle for 500ml RB flask with stirring and a hotplate stirrer and small centrifuge. All I ask is they be in good working order and be USA wirered.

Also a binocular Microscope with good lens and stage, Dont care about age.

Dr.Bob - 12-1-2018 at 19:30

I'll try to consolidate my heating mantles soon, I don;t have many left, but there are a few left scattered in some other boxes, so I'll look out for any 500 ml ones.

I do have a few stirring hotplates left, mostly older Corning ones, most would be $100 plus $15 for shipping in the US. I am also trying see how many of what models.

I have been busy filling a bunch of orders, so backed up a bit, but trying to keep up, so thanks for people's patience.

Dr.Bob - 12-1-2018 at 19:45

Also, while looking for stuff for people I have found the following boxes of items, many of which I was out of, so if you asked about these, I have them back now:

a box of sep funnels, mostly with PTFE stopcocks w/stoppers - 250 ml-$30, 1L-$40

a box of filter flasks, mostly 500 ml ($7) but a few each of other sizes up to 2L -

a box of various 24/40 jointed erlenmeyer flasks, mostly 500 ml ($5 ea, stoppers are $3), but also 125, 250, and others - I have been out of these for a while, and I know a few people wanted some

I have found a few more beakers in sizes up to 1L, plus lots of new 250 ml ones still

Lots of 14/20 addition funnels 10, 25, and 50/60 ml, Dean Starks, and 3 necks...

a whole box of 47 mm membrane filter apparatus, extra reservoirs and more.

I still have a bunch of amber Boston rounds in 60 and 120 ml with PTFE lined caps, plus some wider mouth 60 ml bottles for solids with PTFE lined caps. - Most are $2 each other than the plastic coated ones, which are brand new and $3 each.

I have entire boxes of the following: plastic tubes (30 ml centrifuge and many others), various pipette tips, 96 well type plates, and eppendorf repeater thingees.

I am attaching the most recent inventory of what I am fairly sure of having. Many items say 0 for quantity, but I am still finding some things, so I leave them there for simplicity, but if you really need something, let me know and I can look for it in the remaining unsorted boxes. I also have many things that just are hard to describe or are custom made, like still heads, distillation heads, various adapters, fittings, flash columns, and so much more. But the number of boxes is finally shrinking, trying to finish sorting the last pile of boxes from storage.

[Edited on 13-1-2018 by Dr.Bob]

Attachment: Glassware Inventory Dec 2017.xls (83kB)
This file has been downloaded 186 times


NEMO-Chemistry - 12-1-2018 at 19:51

14/20 and anything size 10 put me down for

New to the Forum

PrussianBlue - 20-1-2018 at 14:47

Quote: Originally posted by Dr.Bob  
Also, while looking for stuff for people I have found the following boxes of items, many of which I was out of, so if you asked about these, I have them back now:

a box of sep funnels, mostly with PTFE stopcocks w/stoppers - 250 ml-$30, 1L-$40

a box of filter flasks, mostly 500 ml ($7) but a few each of other sizes up to 2L -

a box of various 24/40 jointed erlenmeyer flasks, mostly 500 ml ($5 ea, stoppers are $3), but also 125, 250, and others - I have been out of these for a while, and I know a few people wanted some

I have found a few more beakers in sizes up to 1L, plus lots of new 250 ml ones still

Lots of 14/20 addition funnels 10, 25, and 50/60 ml, Dean Starks, and 3 necks...

a whole box of 47 mm membrane filter apparatus, extra reservoirs and more.

I still have a bunch of amber Boston rounds in 60 and 120 ml with PTFE lined caps, plus some wider mouth 60 ml bottles for solids with PTFE lined caps. - Most are $2 each other than the plastic coated ones, which are brand new and $3 each.

I have entire boxes of the following: plastic tubes (30 ml centrifuge and many others), various pipette tips, 96 well type plates, and eppendorf repeater thingees.

I am attaching the most recent inventory of what I am fairly sure of having. Many items say 0 for quantity, but I am still finding some things, so I leave them there for simplicity, but if you really need something, let me know and I can look for it in the remaining unsorted boxes. I also have many things that just are hard to describe or are custom made, like still heads, distillation heads, various adapters, fittings, flash columns, and so much more. But the number of boxes is finally shrinking, trying to finish sorting the last pile of boxes from storage.

[Edited on 13-1-2018 by Dr.Bob]



I'm new to the forum and I'm not very familiar with your sales methods, but how much does shipping generally run? I'm a chemistry undergraduate and I'm looking to begin an amateur lab to supplement my current organic lab.

Dr.Bob - 20-1-2018 at 15:22

For my stuff, it ships from NC, USA. Rather than sell one item at a time on Ebay or Amazon (which I also do some of), I have a larger list of items and kits which allow people to buy a bunch of stuff for one actual shipping cost. Even with combined shipping rules, it is hard to do that on Ebay, nearly impossible on Amazon.

The actual costs depend on weight, package size, and distance. For small packages in the eastern US, the postage is about $4-10, and $5-15 to the west coast. Medium packages are $10-12 east coast, $16-30 west coast, and then the largest packages can be $15-30 east coast and up to $50 on the west coast. In some cases UPS or FedEx is cheaper, I try to pick the cheapest way. Midwest is between the east and west prices.

For example, I just shipped a 16 pound large box to the northeast for about $18, two very large packages to TX for about $30 each (Fed Ex ground was cheaper than USPS here), and a medium box (4-5 pounds) to Cal for about $17. Shipping to international places can be done, but prices have gone up drastically lately, only practical now for smaller items, such as a 14/22 kit, which weighed about 3 pound, to the UK was about $36.

I try to keep a running inventory in the posted spreadsheet, but it is not comprehensive or always perfect, so most people send me a list of stuff that is either on the list along with things not on the list as well, I try to check which I have and then estimate the shipping based on the weight and their location. I do most deals via Paypal, just like an Ebay sale, but avoiding Ebay saves about 15% in fees that are reflected in the prices. I also know a few others doing this now, so I can sometimes find things that I don't have for still good prices. For instance I was able to get some Qorpak bottles from another person here in a trade/barter deal, so I have lots of them which I can sell for a fraction of their normal price.

Currently I have finished making up a few more distillation kits, containing the basics, much like a college organic chem kit. I have one or two each of them in 14/20, 24/40, and 29/42, each has a variety of flasks, dist. head, claisen, vacuum adapter, inlets, therm adapters, condenser (kits come standard with a liebig, but I have a variety of other types available), and other small pieces. Each can be customized with addition funnels, Dean Stark trap, other condensers, and more. Every kit might be slightly different, but unlike most places, I can modify it to your needs easily. I also have lots of complex flasks, like multineck rbfs available in all three sizes.

PrussianBlue - 20-1-2018 at 18:40

Roughly speaking, how much would a 14/20 simple distillation kit run me if shipped to the midwest?

[Edited on 1-21-2018 by PrussianBlue]

Justin Blaise - 25-1-2018 at 09:49

Bob, do you happen to have any blast shields for sale?

Dr.Bob - 26-1-2018 at 05:48

Quote: Originally posted by PrussianBlue  
Roughly speaking, how much would a 14/20 simple distillation kit run me if shipped to the midwest?


A "standard" 14/20 kit includes the basics, about 10 various flasks from 25-250 ml (incl a few two or three neck ones), dist head, claisen, vacuum adapter, condenser, stoppers, inlets, and a few other items for $100. That is typical of what I compile. It typically has rbfs from 25-250 ml, in one and three necks, plus a few pears and recovery type flasks, but I can customize the size, complexity and flask types. Shipping is normally about $10-15 to the east coast, $12-17 to midwest, and about $14-20 to west coast.

Options which you can add include addition funnel ($15-25), Dean stark trap ($15-25), coil/reflux type condenser (~$20), short path condenser ($40-50), a cow type fraction collector, and a few other items. There are many photos of 14/20 extra bits on about the 3rd or 4th page of this thread.

I also have now found enough glassware to make a few more kits in 24/40 and 29/42, those can span from 50 ml up to 5L in volume of flasks. But practically speaking, I would use 14/20 for 5 to 250 ml range, 24/40 for 50 or 100 ml up to 1 to 3 L, and 29/42 only if you want to do mostly > 250 or 500 ml work, like setting up a solvent still, larger reactions, or making hooch.

PS, I'll look for any blast shields, I don't recall any, but might be able to find one with one of the local people I swap stuff with. They tend to be very heavy to ship. You can make a decent one with a 2 x 6, cut a slot into it, and glue a sheet of 1/4" plexiglass, or still better, polycarbonate, into it. The curved ones are nicer, but pricy.

[Edited on 26-1-2018 by Dr.Bob]

sansos - 12-2-2018 at 21:34

Id like a 24/40 dean-stark with a ptfe stopcock please

Dr.Bob - 14-2-2018 at 18:56

Quote: Originally posted by sansos  
Id like a 24/40 dean-stark with a ptfe stopcock please

Sorry, I don't know if I have any left of those left in 24/40, I do have them in 14/20 and 29/42 for sure, but I will look for any 24/40 ones remaining.

Bert - 15-2-2018 at 01:53

Got any Vycor or quartz glass flasks with ground joints- Ideally, 24/40? Doesn't have to be very large, 500ml would be plenty big enough.

Any other Vycor bits?




[Edited on 15-2-2018 by Bert]

Dr.Bob - 16-2-2018 at 18:57

Quote: Originally posted by Bert  
Got any Vycor or quartz glass flasks with ground joints- Ideally, 24/40? Doesn't have to be very large, 500ml would be plenty big enough. Any other Vycor bits?


No, no quartz or vycor. Sorry. Keep a lookout on Ebay as well, I see things on there every once in a while.

The only place I know that does quartz work is close to me, however, Prism research glass is one of the few. Good luck.

www.prismresearchglass.com

Swinfi2 - 23-2-2018 at 07:50

I'll need to get the cash together first so if its cool can you quote me some prices?

I've already got a still setup and some RB's all in 24/29 so I'd preferably like to keep all the same joints but will need adaptors otherwise.

vigreux column,
pressure eq. dropping funnel,
1L 2 and 3 neck RBF,
beakers, 3x 250ml, 2x 500ml,
measuring cylinders, 10ml, 100ml,

delivery would be to the UK so can you speculate on delivery too plz.

Dr.Bob - 23-2-2018 at 11:33

Almost all of my glassware is US, so most of my stuff in that size is 24/40, I have most of those items in 24/40, the prices are all in the spreadsheet I post occasionally, based on the size for most items. I attached a newer copy.

The main issue is that shipping to the UK from the UK has gone up a huge amount lately, due to the way international postage rates are calculated in the US (based on some treaty from centuries ago), which makes the US subsidize imports, like from China, by raising rates on exports, like to the UK. The summery is that a 4 pound box costs about $45-50 to the UK now, so beakers and large flasks are very expensive to ship, due to their weight. I am happy to do it, but the costs will be quite steep, which causes most people to stay within Europe. Most Pyrex glassware and all Duran is made in Europe, so it SHOULD be cheaper there than here, but I imagine it is not, in reality.

Attachment: Glassware Inventory Dec 2017.xls (83kB)
This file has been downloaded 238 times


Dr.Bob - 24-2-2018 at 17:57

I am trying to clean out some old stuff. If anyone is looking for clamps, bossheads and other hardware I have a limited time offer. I have a bunch of older clamps (test tube, 3 prong, etc), most are old, dirty, corroded, some are not quite right, some have a frozen thumbscrew, and/or some are just cheap ones. I have enough to easily fill a medium flat rate box, or to almost fill a large one, I could fill any remaining space with bottles or vials. I would ask $45 for the medium and $60 for the large, including shipping in the US. That is about the cost of buying one new clamp from Fisher or 3 or 4 used clamps. I promise at least one decent clamp of each size will be there, plus lots more. This is a limited time offer, once it sells, it will be gone until I gather enough for another box. This is an ideal solution for a handy person with limited cash.

Dr.Bob - 10-3-2018 at 06:46

Several people have asked me about hot plates lately, so I did an inventory of what is left, and tested them all..

Here is a list of my current hot/stir plates. The Corning ones below (PC models) all have a nominal size of 6 x 8", which has a usable 5" x 7" area on top.

PC-420 - clean - stirs and heats fine - $140
PC-420 - dirty - stirs and heats fine - $120
PC-420 - dirty - heats fine - not stirring - $100
PC-410 - clean - stirrer only - $100
PC-320 - clean - stirs and heats fine - $120
Cimarec - little dirty - heats and stir well - $150 - digital temp readout works - stirrer is a little noisy - nominal size is 8" x 8", usable is 7" by 7" top. The model number is 8P131325. (For a look at similar versions, see https://www.nist.gov/laboratories/tools-instruments/thermo-s... or
https://assets.fishersci.com/TFS-Assets/LED/product-images/F... )

I think I still also have a PC-320 that the stirring on is not working currently, but it heats fine, it would be $80

The shipping on most would be $15 within the US via flat rate priority mail medium box. If you want more than one or are buying other things, I can combine the shipping to cut that cost.

To see an example photo of a PC-420, look at
http://www.nist.gov/laboratories/tools-instruments/corning-p...


drzdude - 12-3-2018 at 18:14

Just wanted to put a good word in for Dr. Bob!
Got a couple things from him and he threw in some freebies and wrapped each glass piece with bubble wrap. Super professional packagaing and nothing broke! Very satisfied!:)

Daxotron - 29-3-2018 at 18:56

Hi, I am really new, like literally registered to post this post. Besides that point, what do you think would be a good kit for a casual home lab? Mostly dealing with small organic reactions and distillations if anything, but I don't have any glassware so I'm short on that regards. I live in the East Coast so shipment shouldn't be an issue, but if I were to set up an order from you, what do you think would be the best combination of simple glassware for me?

violet sin - 29-3-2018 at 21:04

I have been meaning to post this for some time now. Thank you Dr. Bob for the 14/20 distillation kit w/ extras. Very well packed as always, awesome price like always, thank you thank you.

IMAG4797.jpg - 989kB

Very pleased customer, yet again.

Magpie - 30-3-2018 at 10:14

Dr.Bob:

I am looking for a thistle tube like the one shown in the photo. If you have anything similar please let me know. -Don

thistle tube.JPG - 87kB

Dr.Bob - 30-3-2018 at 16:40

Quote: Originally posted by Daxotron  
Hi, I am really new, like literally registered to post this post. Besides that point, what do you think would be a good kit for a casual home lab? Mostly dealing with small organic reactions and distillations if anything, but I don't have any glassware so I'm short on that regards. I live in the East Coast so shipment shouldn't be an issue, but if I were to set up an order from you, what do you think would be the best combination of simple glassware for me?


Most people start with simple glassware like beakers, graduated cylinders, flter flask and a buchner funnel, maybe a few erlenmeyer flasks, funnels, and some bottles or vials to store stuff in. They are heat resistant, safe for organics and corrosives, and more accurate than most kitchen measuring cups. But you can use OTC or home items for many tasks, especially if they are messy or non hazardous. You can get a variety of this type of used glassware for $25-100 that covers most things that you might want to start. Some disposables like pipettes, test tubes, and filter paper are also useful, I have some, but not all of those things, and can do small amounts to start you off.

For distillations and more complex reactions, a kit like that shown above is about $100 in used condition (my kits are all older US made, used, but high quality, labware), and then you can add stuff as needed, but it will do a lot, I used almost the same kit in sophomore organic lab. There are also cheap new versions from China and India, some are not bad, some are terrible, and since China subsidized their exports postage, shipping is cheap. Sometimes things are good, some bad, very dependent on the seller. Make sure to use paypal or a credit card so if there is a problem you can make a claim.

But you can get smaller or bigger kits than that for less or more than $100. I like to start simple and get people to buy more stuff if they find they need it, it does not take much to do simple organic reactions. So for $25 - $200 you can pretty much get a basic lab.

Hope that helps, I had more info then my browser crashed, so I will stay shorter this time.

Dr.Bob - 30-3-2018 at 17:28

Quote: Originally posted by Magpie  
Dr.Bob:
I am looking for a thistle tube like the one shown in the photo. If you have anything similar please let me know. -Don


Not sure if I have exactly that, but I am still looking around, it might take a few days to look in the likely places. I know I have had some similar ones somewhere years ago, with a wider top, like a funnel. But it also looks a lot like a larger volumetric pipette that has been cut in half. Not sure how easy to score and snap one, but I could try, then just fire polish the edge. I could try that if you want.

Magpie - 30-3-2018 at 17:40

No, please don't bother cutting a pipette. I did find something that will work at Fisher Scientific. It is 45mm wide at the funnel, however, which is much larger than I need. I did order it as it is holding up my synthesis of catechol.

mayko - 4-4-2018 at 17:26

Met with Dr. Bob today! I got some odds and ends but most excited about a new hot plate! The old one was a discard from a local community college and it's gotten unworkably decrepit. I am considering some sort of Viking funeral - take it outside, pile some thermite + magnesium on top, and turn the heat all the way up xD Thanks again!

[Edited on 5-4-2018 by mayko]

Dr.Bob - 10-4-2018 at 16:20

Here is an udated list of my current hot/stir plates. The Corning ones below (PC models) all have a nominal size of 6 x 8", which has a usable 5" x 7" area on top.

PC-420 - clean - stirs and heats fine - $140
PC-410 - clean - stirrer only - $100
Cimarec - little dirty - heats and stir well - $150 - digital temp readout works - stirrer is a little noisy - nominal size is 8" x 8", usable is 7" by 7" top. The model number is 8P131325. (For a look at similar versions, see https://www.nist.gov/laboratories/tools-instruments/thermo-s... or https://assets.fishersci.com/TFS-Assets/LED/product-images/F... )

I also still have a few broken ones, mostly without cords or with frayed ones, may work or not, hard to tell. If anyone wants to try to fix a few, or salvage them for parts, I am willing to part with a couple for just the cost of packing and shipping them, in return if you can get more than one working, I would be interested in fixing some for sale and splitting the proceeds or getting back one or two working ones as a trade.


Dr.Bob - 11-4-2018 at 18:13

Also, I have recently found both a box of sep funnels (from 60 ml to 4 L size, many intact, some with chipped or broken drip tubes so I would discount) and a box of Soxhlets of all sizes. If you are looking for any of these, let me know and I can see exactly what I have. Examples are: http://catalog2.corning.com/Lifesciences/en-US/Shopping/Prod...

Sep funnel, used in good or better condition - Teflon stopcock 60 ml have lots of intact ones $20.00
Sep funnel, used in good or better condition - Teflon stopcock 125 ml have about 8 $25.00
Sep funnel, used in good or better condition - Teflon stopcock 250 ml have about 5 $30.00
I also have 1 brand new 250 ml one for $40
Sep funnel, used in good condition 500 ml 1 or 2 left, only glass stopcock or broken off tip $30.00
Sep funnel, used in good or better condition 1000 ml 4 $40.00 Some chipped ones for $35
Sep funnel, used in good - Teflon stock cock 2000 ml 2 $50.00 Most have chipped/broken drip tubes
Sep funnel, used in good - Teflon stock cock 4000 ml 2 $65.00 Will be fun to ship. These are heavy.

These are some of the sizes, see this link for the details, various brands, but similar to
http://chemglass.com/product_view.asp?pnr=CG-1369
Sohxlet Extractor with matching condenser, small, condenser is 34/45 $55.00
Sohxlet Extractor with matching condenser, med, condenser is 45/50 $65.00
Sohxlet Extractor with matching condenser, large, condenser is 55/50 $75.00

Bert - 16-4-2018 at 13:58

Hi Dr. Bob, please check your U2U? Looking for a bump trap, seals, advice.

Thanks!

XeonTheMGPony - 29-4-2018 at 11:09

Can I get a list of available prescored ampules, and or crimp seal ampule tools and supplies.

Dr.Bob - 29-4-2018 at 17:44

Quote: Originally posted by XeonTheMGPony  
Can I get a list of available prescored ampules, and or crimp seal ampule tools and supplies.


I have a box or more (100 or 144+) of 1 ml ampules for glass sealing. I can send them in boxes of 10 pretty easily if you just want a few, or I can ship a partial or whole box.

I also have some crimp top ampules, I would have to see which ones I have left, I had some 5, 10, 20 or 25ml ones, can't remember how many of what. They are all 20 mm dia septa. If you know how many of what size you are looking for, I can narrow down my search. I do also have a crimper tool for them as well, was holding it for someone a long time back, but they never bought it.

Bob

[Edited on 30-4-2018 by Dr.Bob]

Dr.Bob - 29-5-2018 at 18:00

Here is an updated copy of the inventory. I have a hard time keeping it updated, but I am trying. Again, for new people, this is a rough list of the glassware I have available for sale. I am out of many things, but keep finding more as I unpack more boxes.

Most of this is used glassware from a long closed chemical company that a friend worked for, his only ending pay and retirement was anything he could carry out within 2 days of the shutdown, which was about 200 boxes of labware. Some is from a few other companies that friends have worked with and also closed. A few items are new, either still in the box from the closed companies or items that I have bartered for with other sellers and a few group buys. I share the proceeds with my friend, he did not have space and time to sell it. 99% of the glassware is US made, high quality glassware from top companies.

If you have any questions on the condition, please ask. I am sometimes slow to answer, as I have a full time job, plus a few part time ones. So I answer questions as fast as I can, and try to ship orders quickly once they are agreed upon, but it can take a little while to get to that point. But I try to make people happy and do fair deals. Thanks to the people that have helped me and my friend make some extra money, recycle some good glassware, and clean out a lot of boxes that we don't have space to store much longer.

Attachment: Glassware Inventory May 2018.xls (84kB)
This file has been downloaded 338 times


Dr.Bob - 1-10-2018 at 18:14

Here is a newer spreadsheet, not too many changes, but a few.

Got a few 250 and 500 ml filter flasks left, lots of volumetric flasks, more erlenmeyer flasks, still have some new 250 ml beakers, and more.



Attachment: Glassware Inventory Oct 2018.xls (84kB)
This file has been downloaded 260 times


weilawei - 15-10-2018 at 13:01

I just purchased a Dean-Stark trap from Dr. Bob. It's a really gorgeous brand-new Chemglass piece, and I have to say, it may be the best deal I've ever gotten on glassware. His communication was excellent and prompt. I received the package in 2 business days--very quick! All around incredible service, and I'll be checking Dr. Bob's selection first in the future.

Thank you so much!

SHADYCHASE54 - 14-12-2018 at 09:47

Hello I am looking for a round bottom flask with a bottom drain. Would you or anyone else have one for sale at reasonable cost? 24/29 24/40// or 29/32 29/42 500ml-1000ml 24/40 preferred. I am also looking for 10/18 glassware, adapters, condensers. I have put together a set that is nearly complete I still require a water cooled condenser a reflux condenser etc.

I too am looking for a reaction kettle(s), 250ml-2000ml at reasonable cost I obviously realize 2000ml kettle set for $50 is not reasonable, although welcome but hardly practical, however $200 for a used set up is also not particularly reasonable either. All I hope for is reasonable pricing.

Lastly anyone whom has any stainless steel reaction vessel (s) jointed or triclamp fitted I would be extremely interested in talking to you I would also be interested in aquirring a thick walled stainless or steel cylinder like a cup. If anyone has something or can guide me I would appreciate it.

Any responses would be appreciated.
Best regards.






Dr.Bob - 16-12-2018 at 19:56

I have a few things in that list. I took photos a while back but have not yet posted them, as they are mostly in storage right now, but I can dig them out given a little time.

I have one 2000 ml 24/40 3 neck rbf with a bottom drain. - I have not set a price but it is quite a nice flask, looks like new I might have had one in 1000 ml but cannot find a photo of it so far.

And I have a small variety of jacketed fixed kettle reactors, mostly from 250 ml to 1000 ml, maybe one at 2000 ml, but not sure off hand on a 2000 ml one. I do have one big one, 5 or 6 L, but it will be pretty pricey, I still need to research that one and will likely list it on Ebay, they sell new for $5-6000, and this one is pristine.

I had some 10/18 glassware, a micro set which I sold, but I might have a few pieces left, so I will look to see what is left.


20180209_174522.jpg - 1.3MB 20180209_174420.jpg - 1.4MB

[Edited on 17-12-2018 by Dr.Bob]

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morganbw - 17-12-2018 at 15:08

Dang Dr. Bob,
I had to wipe the saliva from my chin.

Dr.Bob - 18-12-2018 at 07:16

My u2u is locked up and it won;t let me delete messages right now, so I'll post this here.

The 2000 ml 3 neck with bottom drain lists for $300+ on Chemglass new, I would sell it for $75, it is complete and nearly perfect.

The smallest reactor is 250 ml, they start at $500 new, it would be $75, the 1000 ml ones I would ask $100 for, I think I can find tops for most, but not sure if all of them, BUT I don't have the O-rings or clamps for them, a few people have used plywood to cut a circle out in a square and then used bolts and nuts on the four corners to hold them together. The O-rings can be ordered off of EBay, there are a few people that sell them for reasonable prices under "buna O-ring" and the diameter needed. The tops I have are mostly complex ones with about 4-8 joints, openings, or fittings, so that might take a little work, but I can try to find the right adapters, fittings, stoppers or seals for them.

Morgan - 18-12-2018 at 16:40

Quote: Originally posted by Magpie  
No, please don't bother cutting a pipette. I did find something that will work at Fisher Scientific. It is 45mm wide at the funnel, however, which is much larger than I need. I did order it as it is holding up my synthesis of catechol.


If you ever need something vaguely similar in fused quartz there's these. 30 dollars or best offer the seller posts on eBay.
http://www.sciencemadness.org/talk/viewthread.php?tid=71645&...

Dr.Bob - 25-12-2018 at 12:00

Merry Christmas to all you science geeks out there!

In the spirit of Christmas, I have a used set of A and B of the Advanced Organic Chemistry by Francis A. Carey and Richard J. Sundberg, the old green edition from when I was in school, that I will mail free of charge to the first person who responds to this post, signifying that you are really a science geek if reading this at Christmas. I would prefer someone who really can use it, such a college student, and east coasts will save me some postage, but the person to post here wins, then just u2u me your mailing address.

I am trying to clean out some more old books, so I will try to post some more books soon which I will give away for postage only. If you are in NC, I could even give you a bunch, since that might save me postage.

Bob

happyfooddance - 25-12-2018 at 12:42

I sent you an email, Dr. Bob. Merry Christmas!

Dr.Bob - 25-12-2018 at 12:44

We have a winner. I'll do some more books soon, thanks and Merry Christmas.

Texium (zts16) - 26-12-2018 at 11:25

Aw, I wish I saw this sooner, since I'm taking Advanced Organic Chemistry next semester. Oh well, congrats, happyfooddance!

Dr.Bob - 29-12-2018 at 08:50

Home everyone had a Merry Christmas and a Happy New Year. And thank you to everyone who got glassware over the last year, I am still slowly shrinking the pile of glassware I need to find a home. But it is not quite gone yet.

While looking for some larger flasks, I came upon a couple boxes of large RBFs. I'll try to get photos, but for now, here is what I found: (my light in storage is poor, so hard to see some details, I'll try to get photos next time. I had a couple people ask me about large rbfs recently, so they get preference if two people ask about the same flask at a the same time.

1 x 5L RBF - not sure of brand, maybe Chemglass - 45/50 Center joint plus 2 x 24/40 side joints - $50

1 x 5L RBF At-Mar brand- 55/50 Center joint plus 3 x 29/42 side joints - $50

1 x 5L RBF Pyrex brand- 55/50 Center joint only - this flask is either dirty or etched a little, not sure as I can't clean it out well in my storage space - $30

1 x 3L RBF - Chemglass - 1 x 24/40 joints - $25

1 x 3L RBF - Kontes - 1 x 24/40 joints - $25

1 x 3L RBF - Kimble/Kimex - 45/50 Center joint plus 2 x 24/40 side joints - $40

I also have several 24/40 jointed addition funnels each in 125 and 250 ml size that have either a glass stopcock or a non-standard sized one (mostly Kontes and Ace proprietary ones) that I will sell at a discounted price, as people prefer standard PTFE stopcocks. These normally go for $50 and $60 (125/250 ml) but I will sell them for $35 and $45 since I want to find them a home sooner.

And lastly, I have one remaining 14/20 distillation kit made up which contains a few basic 14/20 rbfs from 10 to 250 ml, including a couple 3 necks, the basic adapters needed, like distillation head, claisen adapter, curved and straight vacuum inlets, gas inlet, stoppers, condenser, and a few other bits. I would ask $100, but can customize it to a degree, as well as add or swap things if desired (some things like a coil condenser, addition funnel, Dean Stark, etc add a little more cost).

happyfooddance - 29-12-2018 at 09:03

Quote: Originally posted by Dr.Bob  
Merry Christmas to all you science geeks out there!

In the spirit of Christmas, I have a used set of A and B of the Advanced Organic Chemistry by Francis A. Carey and Richard J. Sundberg, the old green edition from when I was in school, that I will mail free of charge to the first person who responds to this post, signifying that you are really a science geek if reading this at Christmas. I would prefer someone who really can use it, such a college student, and east coasts will save me some postage, but the person to post here wins, then just u2u me your mailing address.

I am trying to clean out some more old books, so I will try to post some more books soon which I will give away for postage only. If you are in NC, I could even give you a bunch, since that might save me postage.

Bob


Books arrived yesterday (that was fast)!

I am so very grateful. I worked my way through O-chem with digital literature and library loans, and I regret it. There is really no substitute for a nice paper copy of a good book, and not having to return it (or pay late fees).

Thanks Dr. Bob! Also, the variac came too :)

silveroranges - 16-1-2019 at 08:08

Purchased quite a bit of glassware and lab supplies from Dr.Bob, and hands down best experience. Very professional, quick to reply to emails, fast shipping. And the items are packaged very robustly. 10/10 will buy from again.

itsafineday - 17-1-2019 at 09:41

I am very interested in a 14/20 distillation kit if it is still available.

Looking for a home.

+ION - 31-1-2019 at 17:06

I don't know what it is but it is looking for a home. Make an offer!

I posted it in the mystery glassware thread.
https://www.sciencemadness.org/whisper/viewthread.php?tid=31...

Thanks to Dr. Bob for providing me with a stopcock for it.

On that note, in appreciation to the Dr. for his services to me and the community over the years, I will donate 1/2 of what I make to him...so bid big!

(PM me with offers)



mystGlass.jpg - 2.5MB

j_sum1 - 31-1-2019 at 17:35

I am going to guess it is a jacketed gas absorption apperatus with separation ability.
Coolant through outer jacket. Gas bubbled through frit. Reaction produces two phases and as volume increases the upper portion is taken off. Draining product through stopcock allows for separation into two streams.

It would satisfy my glass fetish nicely, but really there is no need. And shipping from US is usually prohibitive.

itsafineday - 14-2-2019 at 05:49

Hey Dr. Bob , Check your U2U when you get a chance.
Quote: Originally posted by Dr.Bob  
Home everyone had a Merry Christmas and a Happy New Year. And thank you to everyone who got glassware over the last year, I am still slowly shrinking the pile of glassware I need to find a home. But it is not quite gone yet.

While looking for some larger flasks, I came upon a couple boxes of large RBFs. I'll try to get photos, but for now, here is what I found: (my light in storage is poor, so hard to see some details, I'll try to get photos next time. I had a couple people ask me about large rbfs recently, so they get preference if two people ask about the same flask at a the same time.

1 x 5L RBF - not sure of brand, maybe Chemglass - 45/50 Center joint plus 2 x 24/40 side joints - $50

1 x 5L RBF At-Mar brand- 55/50 Center joint plus 3 x 29/42 side joints - $50

1 x 5L RBF Pyrex brand- 55/50 Center joint only - this flask is either dirty or etched a little, not sure as I can't clean it out well in my storage space - $30

1 x 3L RBF - Chemglass - 1 x 24/40 joints - $25

1 x 3L RBF - Kontes - 1 x 24/40 joints - $25

1 x 3L RBF - Kimble/Kimex - 45/50 Center joint plus 2 x 24/40 side joints - $40

I also have several 24/40 jointed addition funnels each in 125 and 250 ml size that have either a glass stopcock or a non-standard sized one (mostly Kontes and Ace proprietary ones) that I will sell at a discounted price, as people prefer standard PTFE stopcocks. These normally go for $50 and $60 (125/250 ml) but I will sell them for $35 and $45 since I want to find them a home sooner.

And lastly, I have one remaining 14/20 distillation kit made up which contains a few basic 14/20 rbfs from 10 to 250 ml, including a couple 3 necks, the basic adapters needed, like distillation head, claisen adapter, curved and straight vacuum inlets, gas inlet, stoppers, condenser, and a few other bits. I would ask $100, but can customize it to a degree, as well as add or swap things if desired (some things like a coil condenser, addition funnel, Dean Stark, etc add a little more cost).


[Edited on 14-2-2019 by itsafineday]

itsafineday - 16-2-2019 at 03:38

Quote: Originally posted by silveroranges  
Purchased quite a bit of glassware and lab supplies from Dr.Bob, and hands down best experience. Very professional, quick to reply to emails, fast shipping. And the items are packaged very robustly. 10/10 will buy from again.


I can't seem to get him to respond to me since I sent him my email.

Dr.Bob - 18-2-2019 at 09:35

I've gotten back to itsafineday, it just took me a while to find the things for his kit. I apolifize to anyone whom I am slow to get back, I am carrying on about 10 or more conversations most days, so I can lose track of one or two sometimes until I get caught up with people and look back. U2Us are hard to keep track of, so I try to use regular email once I get corresponding, I answer that much faster than u2us.

Also, I will be traveling some over the next few weeks, so I will be hard to get up with then, please be patient, but I will have limited email and web access for a few weeks, so if you are wanting something soon, please let me know immediately, and I will try to get it before I leave.

itsafineday - 20-2-2019 at 06:47

Thanks Dr. Bob. Sorry for the impatience.

SHADYCHASE54 - 28-3-2019 at 19:15

Dr. Bob I was just wondering if you any auger type powder addition funnels 100ml or greater?

Thank you.
If you do and the price is right, I will buy it. Obviously I don't expect it be $50. So if you have one shoot me a price you can live with 24/40 or 29/42 preferred but I will make anything work.

One last question do you happen to have any 10/18 lab glass kicking about, I nearly have a full set, I am just missing some condensers and a couple adapters. (Reflux, west/lib. Short path dist. and mini vigrex or hemple). I know 10/18's are rare these days and less sought than the 14/20 sets but I figured I would ask, with hope.

Thanks as always,
I.

Dr.Bob - 30-3-2019 at 18:27

I still have a few 14/20 and 24/40 solid addition funnels, there might even be a photo posted somewhere here already, but I will try to find them and make a list shortly. I think I have 100 or 125 ml and then something about 250 ml.

I have a few odd pieces of 10/18, sold a small kit a while back, but I have a 10/19 Quickfit C1/00 little tiny condenser, about 2" of jacketed length. Also have a few other pieces somewhere around here. I think I also have a short path somewhere, with an even tinier therm joint (maybe 6/8 or something like that) on it, not sure if I have a therm that fits it, but I can look.

SHADYCHASE54 - 31-3-2019 at 00:45

Hello again Dr. Bob,
For now I have decided to say forget the 10/18 glassware I will revisit it at a later date. What I would like to buy is your largest 24/40 auger type powder addition funnel ideally 125cm3 -250cm3 24/40. As well, I will buy a dewar condenser of medium to large size, if you still have any? I would also dearly like to buy a 10/30 distillation thermometer but I worry that the Hg would make the shipping cost to Canada prohibitive. If it doesnt effect the cost too much I would be excited to add one to my order.

Best regards,
I.

[Edited on 31-3-2019 by SHADYCHASE54]

[Edited on 31-3-2019 by SHADYCHASE54]

Free Drying Oven

PrussianBlue - 14-4-2019 at 17:52

Anyone in MN want a free drying oven? I was given one awhile back and haven't touched it, so I just need it gone ASAP. I can get some photos if anyone is interested.

Dr.Bob - 14-4-2019 at 18:43

Here are a few auger type, equalized, solid addition funnels, some gas washing tubes, and a drain-able graduated flask.

20190408_213952   solid addition funnels.JPG - 654kB 20190414_184424   gas washing tubes.JPG - 763kB 20190414_184609   grad cyl drain.JPG - 183kB

CharlieA - 15-4-2019 at 16:48

Dr. Bob, Would you by any chance have the glass stopper assemblies for the drying tubes?
Somehow I bid on a couple of drying tubes that didn't come with the stopper assemblies.
Thanks, Charlie A

Dr.Bob - 18-4-2019 at 18:34

I might have some stoppers that would fit, post or u2u the diameters you need. But I will be out the next week so it won't be for a week or two. And I will try to post prices for the glassware above once Ii get back. I was trying to do that before, but had internet issues.

glassware order

CharlieA - 20-4-2019 at 08:51

Dr. Bob, I'm still interested in a 14/20 kit with Dean-Stark trap.

For the 2 gas washing bottles/traps see the attached photos.

I am not in any hurry for any of these items; I'll be out of my lab until the end of May.
Thanks, Charlie



20190420_100853.jpg - 1.1MB 20190420_100912.jpg - 827kB

SHADYCHASE54 - 9-5-2019 at 19:02

I just received my order from Dr. Bob,
if you need any difficult to source lab glass then just ask him, in my experience he probably has it. My items were well packed he's helpful and his prices are unbelievable. Shipping to Canada can be pricey however what you save on equipment renders the shipping cost moot.

Highly recommend!

beeludwig - 11-5-2019 at 14:21

Hey guys, I'm a chemistry teacher and I'd metaphorically kill for any type of equipment. I teach an alternative program Boston that didn't even have a hands on chemistry program before they hired me. I've been doing some kitchen chemistry and self-funding what I can. But if anyone has stuff they want to donate to a good cause let me know

[Edited on 11-5-2019 by beeludwig]

SHADYCHASE54 - 12-6-2019 at 05:39

Dr. Bob,
I sent u a u2u message

acidbaby - 17-6-2019 at 12:38

Dr. Bob, I sent a U2U.

Dr.Bob - 19-9-2019 at 04:49

Thanks to the many people who have been helping me find homes for so much glassware. I have editted the list to reflect the best guess of what I have left, and it still does NOT include much of the items in photos in this thread, as many are one of a kind items with no easy part number or stock description. I have lots of dewars of all shapes and sizes, many distillation heads (some I cannot even explain), vacuum traps, many various adapters and much more. I am mostly out of routine 24/40 flasks, but still have some 14/20 and many 29/42 flasks in round, pear, recovery, and multiple necks. And I have volumetric flasks of many types, only some are listed in the spreadsheet.

I have been slammed trying to fill a number of orders recently, so you asked me for something, and I have not gotten back, please do contact me to remind me of your order. Once you contact me via a private message, I can give you my email, and that is much better for discussing orders, plus I can send photos or spreadsheets there. Again, thanks to the many people who have helped me reduce the amount of glassware by a significant amountm, but I do still have quite a bit, and still finding more in boxes crammed everywhere in my storage spaces. Lastly, other than maybe Canada, most international shipping is so expensive from the US that it is just not practical to ship from the US to other countries now, due to the rapid increases in postage, and growing issues with lab supplies in customs. For small, special items, there may be a rare exception, but only if you are willing to accept the risks of customs, import fees, and high postage rates.

Attachment: Glassware Inventory Oct 2018.xls (104kB)
This file has been downloaded 62 times


SHADYCHASE54 - 19-9-2019 at 08:17

Hello all,
I just wanted to once again recommend Dr.Bob as a reseller, after multiple successful orders he is by far my preferred seller of consumables, glassware etc. Furthermore he's a great guy and goes the extra mile to work out a deal that works for both you and he. Put it this way if Dr.Bob asked me to make a direct payment via money transfer rather than PayPal I would do so without a second thought as I know both my money's safe with him and that I will get exactly what I ordered.
Thanks again Dr.Bob for another perfect transaction.
A+++


Dr.Bob - 20-10-2019 at 18:15

Here are some photos of newly found items, from a few more boxes from the bottom of the pile. There is a good bit of 19-22, so I broke it into 2 "kits", one pretty complete, the second one is OK, but not complete. Then there are some extra pieces, in two other photos. I would ask $100 for the first kit, and $75 for the second one, and I can add any of the other extras to it for the price of the item in 14/20. Or I can sell single items, or mix and match, but I prefer to sell the 19/22 in a few bundles, so offers for the kits take priority.

20191020_164443 19-22 kit 1 box.jpg - 1.5MB 20191020_165046 19-22 kit #2 smaller.jpg - 1.8MB
20191020_164722 19-22 extras 1.jpg - 1.5MB 20191020_164836 19-22 dist head and sohxlet.jpg - 1.2MB


Dr.Bob - 20-10-2019 at 18:26

Here is another group of photos of more sep funnels I found in 250 and 125 ml sizes. I also still have some 250 ml ones with glass stopcocks for $25, as well as one brand new 250 ml sep funnel for $35. The used 125 ml are $25 each, the used 250 ml below are $30

20191020_170318 250 sep funnels.jpg - 1.4MB 20191020_171239 125 ml sep funnels with stoppers.jpg - 1MB

[Edited on 21-10-2019 by Dr.Bob]

Dr.Bob - 20-10-2019 at 19:08

Here are a few more photos. Some Shlenk line stuff (one piece is broken), some older glassware (make an offer or some or all, I have more Florence flasks somewhere else), and 2 simple 24/40 addition funnels (no equilibrium tube, $20 each). Lots of random stuff.

20191020_160950 slenck line stuff.jpg - 1.4MB 20191020_171652 old chem glassware small.jpg - 1.8MB 20191020_165314 24-40 125 addition funnels small.jpg - 678kB

Distillation kit

earpain - 28-10-2019 at 07:44

Greetings Dr. Bob!
I'm very broke but working on some business ideas and deeply in love with chemistry. Any chance of a 24/40 distillation kit? Details such as condenser type and length, flask size on either side, are not important as much as the price.
I only ask for 24/40 because I still have a few working flasks. Vacuum connector would be crucial and thermometer + thermometer adapter would be nice but just a 3 way with stopper would be fine if it made a difference in price. Thanks in advance!
**edit**Please disregard , I found a rare deal on ebay. but i'll likely be emailing soon regarding some of the items on your spreadsheet.

[Edited on 28-10-2019 by earpain]

Dr.Bob - 29-10-2019 at 18:05

I do have lots of 24/40 distillation kit pieces, not sure if I have enough yet to make a complete kit, but working on finding the missing pieces to make a few. I don't have many rbfs left, but might be able to piece together a few. If I could make a complete setup, I would ask about $100, but if you just need certain pieces I can help with that. I also have many add on pieces, like more unique condensers, adapters, and distillation heads. I have similar issues with 14/20, where I have many rb flasks, mostly smaller 3 necks, and most of the kits, but I am missing 3 way dist heads, which seem to be hard to find. If anyone has any, I am happy to swap for some or buy a couple.

Phosphor-ing - 30-10-2019 at 04:48

Received another order from Dr.Bob. Shipper obviously had had a bad day. There were a couple of broken pieces. But as always Dr.Bob made it right! He truly is a blessing to this forum and amateur chemistry.

hasani10 - 16-11-2019 at 10:31

Hi Dr Bob, I was wondering if you ship to UK and if so what would shipping cost be? What pieces of 19/22 glassware do you have?If it's easier for you is it okay if i u2u message you? Thank you very much

Dr.Bob - 16-11-2019 at 19:40

It is getting extremely expensive to ship anything out of the US now, due to stupid postal treaties that are now out of date. Canada is even gotten somewhat crazy, so I have mostly stopped shipping internationally. The 19/22 glass ware I have is mostly displayed in the posts from just a month ago or so, that is all of it, so mostly in 2 kits and a few extras.

Those kits would be a about 3 or 4 pounds weight each, which would likely be about $45 in postage, not including any customs fees, insurance, or other problems. So sadly, that is making it tough to justify.

vibbzlab - 16-11-2019 at 20:52

Equipments are costlier than many chemicals in India. I can easily get almost all chemicals though

hasani10 - 17-11-2019 at 11:21

Ooof yeah that's pretty far beyond worth it, thanks anyway though!
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