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Ground glass joints - US to EU ISO adaptors?
I have tons of 29/42 glassware, and sell it at the same price as the 24/40, sometimes even a discoun ...
11-7-2020 at 15:37
by: Dr.Bob
Blowing 100k on science equipment
The costs depend a huge amount on brand, features, computer hookup, and more. They range over an e ...
9-7-2020 at 05:07
by: Dr.Bob
Anyone else having horrible shipping delays, or is my package lost?
The package I shipped to Australia just arrived after only about 4 months... Apparently it looke ...
7-7-2020 at 05:50
by: Dr.Bob
Lab Stands + Questions
I still have a few 3 prong clamps, bossheads, and maybe a lab stand left, plus lots of hardware that ...
3-7-2020 at 17:29
by: Dr.Bob
Blowing 100k on science equipment
I was going to say microscope with camera, so that scores high. Some petri dishes, 96 well plates, ...
2-7-2020 at 17:17
by: Dr.Bob
Purpose-made compounds and suppliers?
There is a big difference between most scientific articles and patents. To publish a scientific pa ...
29-6-2020 at 17:57
by: Dr.Bob
Where to get a short path destillation head in Germany?
Try searching for a distillation head, that might help. There are people on here in Europe, so so ...
29-6-2020 at 16:59
by: Dr.Bob
Selectively reacting methanol over ethanol?
Not sure for simple ester formation, but for some reactions, like methoxide verse ethoxide, the meth ...
26-6-2020 at 17:15
by: Dr.Bob
Measuring pH
I iwas going to show an example of some pH paper test strips like I have, but with free shipping, I ...
26-6-2020 at 16:37
by: Dr.Bob
Looking for discontinued Buchi R-200/205 WD 34 vacuum seals or DIYing them
The KD-22 is used on models with rotating steam ducts, and even those are getting harder to find. B ...
26-6-2020 at 16:30
by: Dr.Bob
HHO Flame Generator for Glaswork
Wow, that is amazing, I took glassblowing back in college (along with alchemy and dinosaur biology l ...
24-6-2020 at 04:49
by: Dr.Bob
Buchi Screw Wheel 00565 needed!
There is someone on here who made me some replacement gears, I will ask him to check with you.

22-6-2020 at 06:38
by: Dr.Bob
Science equipment looking for a home
I just finished testing some UV lamps. Most are UVP brand, most are dual wavelength, 254 and 365 nm ...
21-6-2020 at 18:36
by: Dr.Bob
Non-polar chromaphores
Nitro compounds work fine for TLC or flash Chrom. if the rest of the molecule is hydrocarbon. Many ...
18-6-2020 at 04:28
by: Dr.Bob
Chinese rotavaps?
I have only used one or two chinese ones, but they are hard to find parts for or repair. If you b ...
15-6-2020 at 08:03
by: Dr.Bob
Science equipment looking for a home
I do have a few small 19/22 flaks, but the postage to the UK is pretty insane now, and shipping inte ...
13-6-2020 at 17:19
by: Dr.Bob
Pyrolysis Oil via Ozonide Decomposition?
bromine is used to test for double bonds in oils. Google it.

most carboxylic acids are very ...
13-6-2020 at 17:15
by: Dr.Bob
High precision analytical balance/scale 120g at .001g & 6kg at .01g resolution
I have a few odd lab balances ranging from simple beam to pan balance to a fully enclosed analytical ...
12-6-2020 at 16:21
by: Dr.Bob
Science equipment looking for a home
I do have one working Variac in stock for $100 (Staco, 10 amp, great variac), trying to repair some ...
12-6-2020 at 16:05
by: Dr.Bob
Pyrolysis Oil via Ozonide Decomposition?
Your ozonalide may be degrading to the epoxide or other similar compounds. Those would still be qu ...
12-6-2020 at 15:54
by: Dr.Bob
3D printing useful parts - anyone doing this? I'd like to print GL45 bottle caps if possible
This is one case where you could spend more figuring out how to make a cap than just buying some, th ...
6-6-2020 at 19:31
by: Dr.Bob
Anyone else having horrible shipping delays, or is my package lost?
Even Amazon is saying that international shipping is almost impossible now to many countries. The ...
5-6-2020 at 03:16
by: Dr.Bob
O-ring for dessicator ground joint
Vacuum use depends on what you are using the desiccator for. If you have a wet compound and are ...
4-6-2020 at 07:39
by: Dr.Bob
O-ring for dessicator ground joint
I second Textium, O-rings won't work except on ones made for them, and under vacuum. Use a clean ra ...
3-6-2020 at 07:07
by: Dr.Bob
Aquiring grinding material for a ball mill
I have some ceramic ball mill media if you are interested. Pieces are cylinders about 3/4" dia by ...
1-6-2020 at 07:49
by: Dr.Bob
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