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How do the PTFE "Chem-Vac Stirrer Bearings" work?
[rquote=671847&tid=158436&author=macckone]
........
I use a chinese ptfe stir shaft/paddle ...
22-3-2022 at 16:54
by: Organikum
latest glassware purchase
[rquote=667855&tid=71645&author=SWIM]Is that little heating bath okay?

A lot of manufactu ...
5-2-2022 at 20:34
by: Organikum
Breaking a stable emulsion
An older textbook says that filtration through a plug of fine glasswool (lab glasswool which is much ...
21-12-2021 at 15:17
by: Organikum
Replacing a broken bleeder valve on a vacuum pump
Are you able to unscrew any of the parts so you can determine the threading used? Or do you know whi ...
28-11-2021 at 15:52
by: Organikum
What I always wanted
I finally fulfilled my long harbored dream and got me this:

[file]91186[/file]


The reactor. ...
28-11-2021 at 00:01
by: Organikum
Attaching 24/40 glassware joints to non-jointed flasks
Drilling holes into rubber stoppers was always a major pain in the ass and I never achieved the resu ...
27-11-2021 at 23:05
by: Organikum
..the Vespiary
[rquote=667663&tid=158028&author=karlosĀ³]I hate it.
I hope we can switch quickly to that o ...
23-11-2021 at 17:31
by: Organikum
Has anyone tried the "Lab Portable Oilless Diaphragm Vacuum Pump"?
[rquote=665703&tid=157969&author=monolithic]The pump in your link only gets down to 160 torr ...
29-9-2021 at 14:59
by: Organikum
Benzene synthesis
[rquote=665682&tid=325&author=macckone]The friedel-craft reaction to disproportionate toluen ...
28-9-2021 at 00:55
by: Organikum
Has anyone tried the "Lab Portable Oilless Diaphragm Vacuum Pump"?
In this price range I would suggest this:

https://www.alibaba.com/product-detail/Vacuum-Pump-Gm-0 ...
28-9-2021 at 00:27
by: Organikum
Benzene synthesis
[rquote=658192&tid=325&author=Jenks]......
But while I am here I wanted to throw in a thoug ...
27-9-2021 at 02:01
by: Organikum
Very good shop
A short time ago I discovered chemcraft.su here and out of curiosity had a look and found many a int ...
21-9-2021 at 01:12
by: Organikum
my recommendation
Bought a few liters of this and that and I am quite happy with communication and price and I am comp ...
20-9-2021 at 23:37
by: Organikum
Thermometers,Clamps and stuff
Last not least some mechanical parts like motors and linear drives everything precision and in worki ...
13-5-2021 at 18:31
by: Organikum
Thermometers,Clamps and stuff
There is also a shitload of stuff for optical banks, anybody interested? Any help pointing me to a f ...
13-5-2021 at 18:27
by: Organikum
Thermometers,Clamps and stuff
High Vacuum and more....

[file]88649[/file] [file]88651[/file] [file]88653[/file]
13-5-2021 at 18:15
by: Organikum
Thermometers,Clamps and stuff
Just some more pictures....

There are also hundreds of sputter masks similar to the third picture ...
13-5-2021 at 18:10
by: Organikum
Thermometers,Clamps and stuff
I stumbled over a treasure cave with laboratory material and the owner wants to get rid of it. I cou ...
13-5-2021 at 18:04
by: Organikum
easy way to save your vacuum pump
Thats common practice but it commands that your vacuum setup is sealed almost to perfection, if you ...
18-6-2014 at 12:30
by: Organikum
Benzene synthesis
Oh that was a long long time ago....lol

Found an article which fits in snuggly here I thought an ...
18-6-2014 at 10:54
by: Organikum
Benzene synthesis
[rquote=329499&tid=325&author=blogfast25]
.....
I'm not keen on the many Utoob metal cans ...
29-4-2014 at 12:09
by: Organikum
[HIT !] IKA and Heidolph stirrer/hotplates + Pt-100 for GOOD PRICE [HIT !]
The Heidolph is sure worth to think about, the IKA I had and it was a real disappointment as it is a ...
17-4-2014 at 15:03
by: Organikum
Willgerodt rxn: Styrene monomer -> phenylacetamide
Thanks a lot Nicodem,as it is always the same, short after posting and bemourning my lack of success ...
17-4-2014 at 14:29
by: Organikum
here comes the sun
The attached article could help to lessen the confusion, oh had it been available already 2007!

I ...
16-4-2014 at 19:11
by: Organikum
Moderator Abuse
[rquote=326160&tid=29939&author=Rosco Bodine]Perhaps the quote came to him while his head wa ...
6-4-2014 at 17:21
by: Organikum
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