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Dr.Bob
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Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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I also just took new photos of my remaining condensers. I got some for some trades, some I just dug out, and others I have had. I also have a few
Wests I have in some 24/40 kits that I am putting together.
I have a bunch of Allihans for $20 each for the unlabelled ones, $25 for the LG longer one. The Fredrichs both have issues, one is new but the inner
tube is broken, easy enough to fix, the other one is missing the inner tube and adapter, they would be $20 each. The Vigreauxs are $20 each, and I
have two small liebigs for $20 each. The coil condenser are $25 for the Chemglass coils, and the like new Synthware reflux coil one.
  
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Dr.Bob
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I also has someone ask me about stirrers, I have three working ones. I don't have any heating stirplates right now, but trying to get some fixed.
The Corning PC-410 is the newest, the dial is damaged, but otherwise it is great, I would ask $60. The Corning PC-310 is older, $50, and the VWR 310
is $50.
  
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Dr.Bob
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Location: USA - NC
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Here are two boxes of books I would like to give away for postage only. First come, first serve, but I will be out town soon for a little while, so
I may have to arrange shipping then, but books will be allocated basedd on the first to u2u or email me. Cost would be ~$5 for one or two books,
~$10 for a medium sized box, and about $15-20 for a large box, as media mail rate is low for large boxes.
These have been claimed so far:
CRC Handbook
Protective groups in organic synthesis
The excitement and fascination of science
Effective writing for Engineers, Managers, Scientists
 
[Edited on 3-2-2025 by Dr.Bob]
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Dr.Bob
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Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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First, a good chunk of the books are claimed for now. I will be out of town for a while, so any other requests I will handle once I get back, as
well as any interest for glassware. Once I get back I will catch up on any new requests, as well as post more photos of books to select from. Hope
everyone stays well.
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SuperOxide
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@Dr.Bob, looking at the condensers in this reply:
Are either of the condensers still in stock?
Do either of the condensers include the feedstock valve like what you posted here?
On both of those condensers I see a red fastner nut thing, do you know what that's for? Im wondering if it could be used for a temperature
probe for an R-205 rotovap.
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Dr.Bob
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Registered: 26-1-2011
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I think I have sold those, but might have a similar one left, I will check now that I am back. I do have lots of simple water condensers left, that
are one piece. The red nut is where you can also hook up the vacuum, or put in a vacuum meter. I might have one which can hold a temp probe, but
they are not very accurate in a vacuum, so I rarely use that. But I will see what I have shortly.
For everyone else with questions, I will try to get back to you soon now that I am home, but it may take a few days to get caught up. Had a greta
time away from work.
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Dr.Bob
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Registered: 26-1-2011
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Here is another list of books to give away, I have a few people that asked before but were too late, they get first dibs on these, but any other
requests will be first come first serve.
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Dr.Bob
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Superoxide,
I don't have any water condenders like shown above, but I do have several of the simpler ones like shown below. They can also be set to allow adding
more material while in use. The red nut is a cap that seals the vacuum inlet, but can be replaced by an inlet adapter or other 5mm tube. The first
two has threaded hose adapters, the second two have standard hose barbs for the water and vaccuum lines. I can provide the stopcocks, threaded
connector and other parts as well. These are listed on Ebay for up to $200, but I would sell them here for about $150, plus shipping, depending on
what other parts you need.
 
 
[Edited on 26-2-2025 by Dr.Bob]
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Dr.Bob
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Location: USA - NC
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Here are a few more flasks I just unpacked. These are mostly 24/40 joints.
A - 24/40 2L evaporating flask - Chemglass - $30
B - 24/40 2L RBF with 1 neck - Pyrex - $25
C - 24/40 1L RBF with 3 necks - Pyrex - $25
D - 29/42 evaporating flask - ? - $20
E - 24/40 1L RBF with 1 neck - Prism (local Co) - $15
F - 24/40 1L RBF with 1 neck - Chemglass - $15
G - 24/40 2L RBF with 1 neck - Kontes - $25 (lost photo, working on it.)
 
 
[Edited on 2-3-2025 by Dr.Bob]
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Dr.Bob
International Hazard
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Registered: 26-1-2011
Location: USA - NC
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I have yet a few more big things to sell. First off is a large rotovap, which I do not know much about. It likely worked, but I don't know for
sure, and don't have the space or time to test it. The good news is that means I just want to sell it for parts or repair, and you can have it for a
fraction of its original cost. Shipping would likely be more than the cost, so if you are near NC it would be easier to arrange a low cost way to
pick up or deleivery it. But I can try to arrange shipping as well, for enough money. Make me an offer or let me know if you are interested.
   
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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Next up is a chiller/heater circulator system. From USA Lab, a UHC-50/40 system that sells new for $10K. It is fairly new and was working
recently. It was used with a large jacketed reactor. This we are looking for an offer of $3000 to $3500, plus shipping or pickup. Also available,
a huge vacuum/pressure pump from GAST, a 4565-V150, a 6HP motor, runs on 208V 3 phase. A big momma. And last I have a portable clean room, 8 x 8 x
8 feet, with Hepa filters, fans, lights, and more.
See https://www.ebay.com/itm/125829179339
See https://www.ebay.com/itm/365485028774
 
 
[Edited on 18-4-2025 by Dr.Bob]
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Dr.Bob
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Registered: 26-1-2011
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I misposted this originally but here are some photos of my remaining 14/20 short path condensers. I am asking $50 for most but would do $40 for the
top left one.
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Dr.Bob
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Registered: 26-1-2011
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I am trying to organize my items a bit better and sort through a bunch of remaining boxes to unpack and list. But a few things have come up that
people were asking about a while back. I have found one or two more 4L filter flasks with side arm inlets, these are huge filter funnels made from
very thick glass, Pyrex I believe. Those I ask $40 for, plus shipping, and these are in very good condition.
I also have two 24/40 joint kits mostly made up, which would be 4 or 5 rbfs (you can help decide which ones are included, with one 3 neck rbf), a
dist. head, condenser, curved vacuum inlet, gas inlet, and stoppers, keck clips, and other bits. Again, I can try to included requested items or add
others like addition funnels, more condensers, and much more. Those are typically $100, but can vary as you add or subtract items.
I also have found yet more fritted funnels, some with 14/20, 24/40 or 29/42 joints built in, some stright stemmed. Plus lots of filter flasks to use
them with. And I have some new 100 ml grad cylinders, plus many used ones in a few sizes, with a kit of 5 various sizes about $25. And many
volumetric flasks.
I am trying to repair and check a few final stir/hotplates, those may be my last. I also have a number of variacs from old and OK to newer and nicer,
that run from $60 to $100 plus shipping. And I only charge real shipping, so the more you buy, the lower the actual shipping cost per item. Thanks
to the many people who have helped me clear out much of the backlog of glassware that I had, I am hopefully to keep shrinking the pile.
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Dr.Bob
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Registered: 26-1-2011
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Here are some more heating mantles I just unpacked. They are for 150, 250, 500, and 1000 ml rbfs, all are Glas-Col, cords are included. The prices
would be the ones in the spreadsheet, except for that second 1000 ml one is very beat, so it would be 1/2 off of the listed price for used.
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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Also just found a Coors 60245 Buchner funnel which is listed as 125 mm filter paper (this one seems tight for that, but works OK.) They have a
600-700 ml working volume above the filter plate. Made of Porcelain. This particular unnel seems to have a rough interior due to what looks like a
medocre glazing job by Coors. Otherwise it looks almost new, barely ever used. Someone asked for me one of these a while back, if they contact me,
I will give them first dibs, but otherwise it can be yours for $40, plus I have a partial box of 125 mm Whatman filter paper I will include with it.
Shipping might be $10 or more as it weighs over 2 pounds.
 
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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And finally, I just found a box full of pH papers, mostly narrow ranges, but here is a brief listing below. I likely have more as well, let me know
what you want. If you want more than a few, i can do discounts.
BDH brand - 6.0 to 10.0 range, 100 strips - I have 5 full boxes, I would ask $5 per box (they sell for $30-70 online new)
ColorpHast from EM science - 0 to 6.0 range - I have 2 boxes of 100 strips each, still sealed in original package, I would ask $4 each,
ColorpHast from Em science - 7.5 to 14.0 range - I have 6 boxes of 100 strips each, still sealed in original package, all 6 for $30, (new they are
$177), or I can break up the box, but I would ask $10 each.
Merck pH 11-13 box of about 100 strips, $5
GE Starch Iodide test papers in box of 1 books of 20 papers, for detection of oxidants (see below) - I have 2 boxes - I would ask $5 per box.
From Goole: "GE Starch Iodide test papers, also known as Potassium Iodide (KI) Starch paper, are used to detect oxidizing agents like free chlorine,
iodine, and peroxides in solutions. They work by reacting with these oxidizers to produce iodine, which then reacts with starch to create a visible
color change, typically blue to purple. "
Merck pH 11-13 box of about 100 strips, $5
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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I will be away for a few days, so I may not answer u2us or emails for a little while, but I will get back to people as soon as I return. Thanks.
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Just found yet another box of heating mantles, likely the last one I have to find, as I thought I had one more somewhere. So if you are looking for
heating mantles, now is the best chance you will have with me for a long time. I have sizes from 25 ml up to 1L, maybe a few bigger ones left, one
is already sold I think.
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Dr.Bob
International Hazard
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Registered: 26-1-2011
Location: USA - NC
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I found a few more working stir and hot plates, have a bunch I am trying to get fixed as well. The first is a simple Cole-Parmer stirring only
plate. It works smoothly at various speeds, great for use with a heating mantle or for RT reactions. I would ask $45 for it, plus shipping, likely
about $10-15.
Next is an old Corning PC-351, which dates back to when I was in college, but also works well and is very reliable. But due to its age and
condition, I would only ask $75 for it, plus shipping, likely about $12-20 (east to west coast).
Lastly, I have a nearly new 2L heating mantle that I just found (asking $60 as it is so nice), it appears to be barely used, and I have a matching 2L
24/40 rbf available for another $20, if you buy both I will go $75 for the pair, again, about $15-24 for shipping both, a little less for either one.
(Please ignore the 1L heating mantle under the cord, it is already sold.)
  
  
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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Found more pH papers. Here are the new ones, along with the list from before.
ColorpHast from EM science - 0 to 2.5 range - I have 1 box of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 2.5 to 4.5 range - I have 1 box of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 4 to 7 range - I have 1 box of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 7.5 to 14 range - I have 2 box of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 11 to 13 range - I have 1 box of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 0 to 6 range - I have 2 boxes of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 5 to 10 range - I have 1 boxes of 100 strips each, still in original package, I would ask $4 each
ColorpHast from EM science - 2.5 to 4.5 range - I have 1 boxes of 100 strips each, still in original package, I would ask $4 each
---
BDH brand - 6.0 to 10.0 range, 100 strips - I have 5 full boxes, I would ask $5 per box (they sell for $30-70 online new)
ColorpHast from EM science - 0 to 6.0 range - I have 2 boxes of 100 strips each, still sealed in original package, I would ask $4 each,
ColorpHast from Em science - 7.5 to 14.0 range - I have 6 boxes of 100 strips each, still sealed in original package, all 6 for $30, (new they are
$177), or I can break up the box, but I would ask $8 each.
Merck pH 11-13 box of about 100 strips, $5
GE Starch Iodide test papers in box of 1 books of 20 papers, for detection of oxidants (see below) - I have 2 boxes - I would ask $5 per box.
From Goole: "GE Starch Iodide test papers, also known as Potassium Iodide (KI) Starch paper, are used to detect oxidizing agents like free chlorine,
iodine, and peroxides in solutions. They work by reacting with these oxidizers to produce iodine, which then reacts with starch to create a visible
color change, typically blue to purple. "
Merck pH 11-13 box of about 100 strips, $5
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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500 ml Sep funnel sale. I have found another box of sep funnels, and will post some group photos of them. I have individual ones as well, but can't
post them all here practically. So they will be in two groups of 4 each. The prices would be: (All are 500 ml capacity, all have #27 stopper
except G, which is 24/40.) If anyone wants multiple items, I can offer more discounts. If you want detailed photos of one or two to consider, please
let me know.
A. Chemglass with intact - glass stocpcock - #27 glass stopper - $35
B. Kimex with intact, replaceable, tip - PTFE stocpcock - #27 glass stopper - $35
C. Kimex with slightly chipped tip - PTFE stocpcock - #27 glass stopper - $30
D. Lab Glass or Atmar? with broken tip over 1" - PTFE stocpcock - #27 glass stopper - $25
E. Chemglass with broken tip about 1" - PTFE stocpcock - #27 glass stopper - $25
F. Chemglass with broken tip about 1/2" - PTFE stocpcock - #27 glass stopper - $20
G. Not sure with intact tip over 1" - PTFE stocpcock - w/ 24/40 stoppper - $35
H. Pyrex with intact tip - PTFE stocpcock - #27 glass stopper - $ 35
 
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Dr.Bob
International Hazard
Posts: 2882
Registered: 26-1-2011
Location: USA - NC
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Mood: Mildly disgruntled scientist
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Just unpacked some more frits. I have 3 similar 150 ml 29/42 jointed glass frits, plus an entire box of mostly smaller frits, a few have 14/20 or
24/40 joints, but most are just straight outlet tubes, which are way cheaper and less fragile, which work well with standard filter flasks, which I
also have many of. I have pretty much any size from 1ml to 60 ml in course, medium and fine, plus a few 150 ml frits, only one or two have 24/40
joints.
The prices would be the ones in the spreadsheet, less if they are dirty or the outlet tube is chipped. If you are interested in more than a few
frits I can offer good discounts, or I can offer really good deals if you are willing to take an assortment, including some dirty ones, if you are
able to clean them.
 
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