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The disappearance of cheap ebay laboratory glassware
Amazon just also said that sellers need to deal with VAT taxes in the UK, so I am giving up on any s ...
25-10-2020 at 06:09
by: Dr.Bob
Qualitative determination of lead in tap water
Perhaps look at one of these and see what patents it lists or if they have a MSDS that contains the ...
20-10-2020 at 19:12
by: Dr.Bob
Mystery Glassware Identification Thread
Most thermometer adapters are designed to handle 5-6 mm and that is about it, the hole might be 7mm, ...
20-10-2020 at 07:55
by: Dr.Bob
Where can I buy an equipment for securing water lines on 1/4-barb of reflux condensers?
They make a little wire clip for that purpose, but I have used copper wire and zip ties for years, h ...
20-10-2020 at 07:51
by: Dr.Bob
Cheap solvent pump that will not dissolve itself?
How much solvent are you trying to pump, mls or liters? FMI pumps are ideal for small amounts of s ...
18-10-2020 at 13:23
by: Dr.Bob
2020 Secret Santa Sign In [OPEN FOR LATECOMERS]
Thanks for organizing this. In this time of social distancing, doing something to feel socialable a ...
17-10-2020 at 16:40
by: Dr.Bob
how to get the maximum heat of a wood stove?
just blow some oxygen into the stove, and that will generate lots of heat. But many modern wood st ...
17-10-2020 at 16:37
by: Dr.Bob
If earth's resources were differently divided?
Its not entirely that most elements are rare, its just that they are not concentrated very well. T ...
17-10-2020 at 16:34
by: Dr.Bob
Aluminum oxide (sapphire) glassware?
When the Czochralski method was mentioned above I did not regognize it, but now I remember seeing 5" ...
17-10-2020 at 16:27
by: Dr.Bob
I finally won a cheap difussion pump
I would guess that the silicon oil has a pretty unique IR, so that would be one way, an NMR would be ...
17-10-2020 at 06:17
by: Dr.Bob
Science equipment looking for a home
I am running out of those adapters, which is why I figure they are best for someone who already has ...
16-10-2020 at 16:20
by: Dr.Bob
Science equipment looking for a home
Anybody have a use for a glass tube, about 24" long, 2" ID, 2 3/16" OD, (~51 mm ID, 56 mm OD, wall a ...
15-10-2020 at 18:12
by: Dr.Bob
Mystery Glassware Identification Thread
I have at least two types of 24/40 adapters which should work with 10 mm tubes or trherms. I would ...
15-10-2020 at 17:16
by: Dr.Bob
Science equipment looking for a home
The complete dry ice condenser with stopcock I would ask about $150 to $200 for, depending on exactl ...
13-10-2020 at 17:15
by: Dr.Bob
Science equipment looking for a home
Going to try a few more photos. I just assembled a Buchi Rotovap R111 for someone recently, and I ...
13-10-2020 at 17:00
by: Dr.Bob
Smelly Argon Gas
I have never had an inert gas smell at all in my history. I would guess that someone (could have b ...
13-10-2020 at 16:44
by: Dr.Bob
How make a liquid cooler/chiller
I was telling someone the other day that you can simply use an old dorm fridge and put a large conta ...
13-10-2020 at 16:39
by: Dr.Bob
Science equipment looking for a home
I tried to use researchtrianglebooks but my friend had used it and abandoned it before, so it was lo ...
13-10-2020 at 16:34
by: Dr.Bob
Science equipment looking for a home
I finally took some photos of some more unusual stir rods. These are 10 mm diam and mostly about 1 ...
12-10-2020 at 17:54
by: Dr.Bob
IKA/Chemglass troubleshooting?
I have also had way more issues with "digital" hotplates than with simple ones with analog knobs. ...
11-10-2020 at 06:26
by: Dr.Bob
How to prevent mold in a home made evaporative cooler?
Just use tritium oxide in it, that should keep anything from growing in it...

Sodium carbonate mi ...
9-10-2020 at 17:15
by: Dr.Bob
T-Shirt Size (for secret santa)
XL, sadly... Hard to lose weight with gyms closed, mall closed (permanently here), and only restau ...
9-10-2020 at 17:09
by: Dr.Bob
Have just started a scientific glassblowing company in eastern Washington state
You have any friends in NC? There is actually a place near here, but just as was going to visit, C ...
9-10-2020 at 16:45
by: Dr.Bob
The reaction of guanidine with alkyl thiuronium salts
I think all I did was evaoprate the reaction and the methyl thiol was gone. My reactions were only ...
9-10-2020 at 16:32
by: Dr.Bob
The reaction of guanidine with alkyl thiuronium salts
I am not an expert on guanidines at all, but I did run an experiement similair to the scheme one abo ...
8-10-2020 at 17:25
by: Dr.Bob
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