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Chemglass hotplate controllers - "shorted" sensor
If you say what the model number is, or include a link to the item, people might be able to help you ...
17-1-2017 at 18:19
by: Dr.Bob
Best solvent/method for removing Latex paint from wood siding?
Also you might just pressure wash the house with detergent and water and remove much of the paint, i ...
16-1-2017 at 08:38
by: Dr.Bob
recirulating vacuum aspirator troubleshooting
Most aspirators are designed for vertical (faucet) mounting, so the valve may not work well sideways ...
15-1-2017 at 19:24
by: Dr.Bob
Looking for a buchi vapor duct 29/32
I have some KD-22 seals, if Steve has them, he might be cheaper shipping if in Europe, but if someon ...
15-1-2017 at 19:19
by: Dr.Bob
Two spectroscopic questions
There are some common fragments to lose in ESI MS: N-Boc groups often lose both Boc for M+H-100 as ...
15-1-2017 at 19:15
by: Dr.Bob
Looking for a buchi vapor duct 29/32
Not sure where you are located, looks like Europe, but I have 29/42 steam ducts available, as well a ...
13-1-2017 at 11:32
by: Dr.Bob
Is it possible to make CuCl2 from Chloroform or DCM?
Copper metal (as small beads) is sometimes used as an HCl scavenger in alkyl halides sold commercial ...
12-1-2017 at 19:48
by: Dr.Bob
Steam pressure chamber for 1000C
But if you heat a container to 1000 degrees, it will not contain any real amount of steam, as it wou ...
12-1-2017 at 19:34
by: Dr.Bob
recirulating vacuum aspirator troubleshooting
Warm water will lower the vacuum, as it has a higher vapor pressure. Also, most aspirators have a ...
12-1-2017 at 05:25
by: Dr.Bob
Selling umicore Palladium chloride anhydrous (PdCl2) 99,95%
I'm curious, why does the bottle say 69,9% (US 69.9%) rather than 99,95% (99.95% for the US people) ...
11-1-2017 at 19:35
by: Dr.Bob
Science equipment looking for a home
I have a Pope brand, 14.5" tall, 6" ID, 7"OD (38cm tall, ~15 cm ID, ~18 cm OD). That should be abou ...
9-1-2017 at 13:12
by: Dr.Bob
LED Lights
Making statements about LEDs use is like making statements about chemicals, way to broad a topic to ...
8-1-2017 at 18:01
by: Dr.Bob
any use for this broken addition funnel?
I just found one box of mostly broken stuff, not sure if the whole box was dropped, or just where th ...
7-1-2017 at 18:10
by: Dr.Bob
SA Heater & Stirrer (Blog)
That is way more watts than most standard heating mantles, so you will need to be careful to use a l ...
7-1-2017 at 11:03
by: Dr.Bob
Distillation kit
I have heard of Laboy, they make decent quality Chinese glassware, not heard of the other one, but t ...
7-1-2017 at 10:58
by: Dr.Bob
Science equipment looking for a home
Another note, I have been cleaning out some stuff due to my moves, and have gathered 4 working Corni ...
6-1-2017 at 18:13
by: Dr.Bob
any use for this broken addition funnel?
[rquote=471075&tid=71655&author=JJay]I've always wanted an addition funnel with two stopcock ...
6-1-2017 at 18:06
by: Dr.Bob
mauve preparation
Most anilines will be pink, red or purple due to traces of oxidation products, but that usually is n ...
6-1-2017 at 18:00
by: Dr.Bob
Science equipment looking for a home
I have lots of dewar flasks, been meaning to make a list of them, but basically I have every size an ...
5-1-2017 at 19:13
by: Dr.Bob
Tosylation of ethanolamine (??)
[rquote=470954&tid=71566&author=AvBaeyer]DMAP often leads to side products with acid chlorid ...
5-1-2017 at 06:40
by: Dr.Bob
Tosylation of ethanolamine (??)
I like using just 2.1 or so equiv of TsCl, too much will be a pain to remove. I do agree that DCM ...
4-1-2017 at 12:19
by: Dr.Bob
Recycling metals, plastics, rubber/foams, glass, circuit boards - value adding processes?
Having been trying to recycle many things for years, the real problem is that recycling everything i ...
3-1-2017 at 19:59
by: Dr.Bob
My library
DJF90,

Nice collection, I have many of the same books, I'll have to take some photos one of thes ...
3-1-2017 at 19:35
by: Dr.Bob
What happened to GalliumSource?
I think Ebay and Amazon both have many rules on chemical sales/shipments, so they may have cancelled ...
3-1-2017 at 18:22
by: Dr.Bob
Tosylation of ethanolamine (??)
Likely worked at least most of the way. I think the NaI in acetone should work, if not DMF instead ...
2-1-2017 at 19:41
by: Dr.Bob
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