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Science equipment looking for a home
I might have some stoppers that would fit, post or u2u the diameters you need. But I will be out th ...
18-4-2019 at 18:34
by: Dr.Bob
Science equipment looking for a home
Here are a few auger type, equalized, solid addition funnels, some gas washing tubes, and a drain-ab ...
14-4-2019 at 18:43
by: Dr.Bob
Potassium ethoxide
It is very tough to make useful KOEt from KOH and water, as even though the equilibrium reaction see ...
8-4-2019 at 05:57
by: Dr.Bob
Potential Extraction of Useful or Noteworthy Compounds from Fluorescent Light Phosphor
Older lamps used to contain berylium compounds, which were quite toxic, so be careful if these are o ...
2-4-2019 at 09:23
by: Dr.Bob
Looking for a Job
I would also advise you to look at manufacturing companies (paint, adhesives, polymers, oil/gas, bio ...
1-4-2019 at 10:26
by: Dr.Bob
Mariotte principle & constant addition funnels
I have a few of these still, for about $100 each, if anyone is interested. They are very hard to f ...
1-4-2019 at 10:12
by: Dr.Bob
Diethyl ether storage and peroxides
I have seen bottles of diethyl ether, THF and dioxanes that were as old as 20+ years. While some d ...
1-4-2019 at 10:04
by: Dr.Bob
Science equipment looking for a home
I still have a few 14/20 and 24/40 solid addition funnels, there might even be a photo posted somewh ...
30-3-2019 at 18:27
by: Dr.Bob
Help with storage
The blue cap on this media bottle is polypropylene, might not last long. A glass stoppered reagent ...
28-3-2019 at 18:39
by: Dr.Bob
Sigma-Aldrich
I might have some old Aldrich catalogs, not sure if they even send them out now, haven't gotten one ...
24-3-2019 at 17:51
by: Dr.Bob
synthesis of Poly(methyl methacrylate)
It was a pretty bad joke, only beat by yours... A

nd I distilled MMA from PMMA back in the 1980 ...
24-3-2019 at 17:46
by: Dr.Bob
Mystery Glassware Identification Thread
[rquote=536907&tid=31602&author=RogueRose]I've never seen this type of screw top on these bo ...
21-3-2019 at 17:49
by: Dr.Bob
synthesis of Poly(methyl methacrylate)
If you depolymerize some acrylic by distilling the methyl methacrylate, and then pour it into a mold ...
21-3-2019 at 17:44
by: Dr.Bob
What's the most expensive substance you've bought?
I have used a complex diamine before that was about $10/g and at one point had 4 gallons of it that ...
10-3-2019 at 18:03
by: Dr.Bob
Labconoco rotary evaporator - how much different than a Buchi is this?
I have used non-Buchi rotovaps, and found widely varying results. They will be harder to find parts ...
10-3-2019 at 17:53
by: Dr.Bob
How to ask my professors for chemicals and equipment?
If you tell them an experiment that you want to do, often they will let you do it, if they have the ...
10-3-2019 at 17:50
by: Dr.Bob
Monitoring rxn temperature: which type of thermometer is best?
Simple low temp analog glass therm will go down to -100 C and up to 20 or 50 C, I have lots of them ...
10-3-2019 at 17:46
by: Dr.Bob
Concentration of organic phase without rotovap?
I have isolated some lipophilic amine HCl salts in the DCM layer, you need about 4-6+ carbons in the ...
10-3-2019 at 17:27
by: Dr.Bob
Old phenols purification
Many phenols, especially diols and aminophenols make quinones and related compounds. Here is my exc ...
19-2-2019 at 08:20
by: Dr.Bob
Science equipment looking for a home
I've gotten back to itsafineday, it just took me a while to find the things for his kit. I apolifi ...
18-2-2019 at 09:35
by: Dr.Bob
Organic oxidizers which can be electrochemically recycled
I don't know of any oxidizer cheaper than hypochlorite, you can buy it by the tanker car load for li ...
15-2-2019 at 08:35
by: Dr.Bob
Organic oxidizers which can be electrochemically recycled
Tempo might work for that, not sure. Also some dyes (Rose Bengal maybe?) react with oxygen and UV ...
14-2-2019 at 14:17
by: Dr.Bob
Need advice on ester formation
Going to be tough, if you use 10 eq of the diol, it might work, but then you have to clean that up. ...
14-2-2019 at 14:09
by: Dr.Bob
Best Hotplate Stirrers
[rquote=598833&tid=142316&author=Abromination][rquote=598825&tid=142316&author=Dr.Bo ...
5-2-2019 at 18:30
by: Dr.Bob
Best Hotplate Stirrers
I have a couple of used Corning PC-351 stirring hotplates left that work OK. One has a fairly dirty ...
3-2-2019 at 17:12
by: Dr.Bob
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