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Thanksgiving
I'll be Thankful when this mess is over, but for now I am just happy to be well and still employed.
26-11-2020 at 11:36
by: Dr.Bob
Covid vaccine results
I just entered a vaccine study to test a vaccine in the clinic, so I may or may not have a vaccine s ...
26-11-2020 at 11:29
by: Dr.Bob
Mystery Glassware Identification Thread
I would guess that it is a way to hold down a gas inlet (often an inlet with a variable stopcock rel ...
26-11-2020 at 11:18
by: Dr.Bob
Glass syringe needles?
Luer fitting is the tapered part, Luer Lock is the metal twist version. They both have the same t ...
24-11-2020 at 07:10
by: Dr.Bob
Glass syringe needles?
I'm very confused, I have never seen a glass syringe without a luer fitting, some are just friction ...
23-11-2020 at 16:02
by: Dr.Bob
External heating for bath to allow use of magstir?
You can buy oil baths with a heater built in, Ace Glass sells them, I would guess others do also. T ...
21-11-2020 at 05:32
by: Dr.Bob
Otc oxalyl chloride success?
I agree that DMSO is not a good cosolvent due to reactions with oxalyl chloride. As long as some o ...
21-11-2020 at 05:22
by: Dr.Bob
Covid vaccine results
Pfizer has already releazed their final data for the EUA request, it is stellar. 95% effective, wo ...
18-11-2020 at 11:01
by: Dr.Bob
LAH reduction question(s)
When I say a trace of water is OK, I mean that it will destroy an equivalent amount of LAH, but the ...
16-11-2020 at 17:33
by: Dr.Bob
Removal of vapor duct Büchi R-114
The metal part holding the duct is integral to the rotovap.

The safest way to remove the steam ...
16-11-2020 at 12:38
by: Dr.Bob
LAH reduction question(s)
The LAH will remove any water still left in the THF, if you use a slight excess of LAH, it should de ...
16-11-2020 at 12:31
by: Dr.Bob
Free radical bromination on only the terminal ends of hexane
You could get adipic acid and reduce it to the hexane-1,6-diol, then convert that to the 1,6-dibromo ...
14-11-2020 at 17:13
by: Dr.Bob
Chloric Acid
Perchlorates can be powerful oxidants, including the acid, which is well known for causing explosion ...
14-11-2020 at 17:05
by: Dr.Bob
Science equipment looking for a home
People keep asking me for photos of items, so I have compiled a list of photos that are already post ...
14-11-2020 at 14:03
by: Dr.Bob
Covid vaccine results
Pfizer said right in the release (see below) that it would file for a EUA, they are saying it will b ...
13-11-2020 at 11:31
by: Dr.Bob
2,2'-Bis-imidazole
The mp of mp of 2-hydropyrazine 185-190 °C, according to Aldrich, so easy enough to test that idea. ...
12-11-2020 at 05:47
by: Dr.Bob
Covid vaccine results
Sadly, the whole thing has been mired in politics, media crap, and stupidity. Clearly, until we ha ...
11-11-2020 at 14:35
by: Dr.Bob
Getting the sulfur smell out of glassware and reagent bottles
Household bleach works well on most sulfur smells. You should be able to stir the toluene with it ...
11-11-2020 at 12:55
by: Dr.Bob
Covid vaccine results
The Pfizer vaccine is being made in at least three places, 2 in Europe, and one or more in the US, w ...
11-11-2020 at 11:01
by: Dr.Bob
Covid vaccine results
I agree that I am optimistic, but even Faucci said it should be available in the US before the end o ...
10-11-2020 at 13:34
by: Dr.Bob
Looking for recommendations for attorneys in DFW area
I would wait and see what happens, there is no telling if customs will open the package, what it mig ...
10-11-2020 at 13:09
by: Dr.Bob
Homemade Hydrometers
But if you are looking at the same mixtures (ethanol and water) over and over, you should be able to ...
10-11-2020 at 10:19
by: Dr.Bob
Covid vaccine results
From Pfizer's release:

Pfizer Inc. (NYSE: PFE) and BioNTech SE (BNTX) (Nasdaq: BNTX) today announ ...
9-11-2020 at 12:59
by: Dr.Bob
Covid vaccine results
The Pfizer vaccine will likely be available by Dec according to the medical people I know, and Moder ...
9-11-2020 at 12:44
by: Dr.Bob
Do you know chemicals by their smell?
I remember, many years back, being asked in a job interview "how to tell acetone from ethyl acetate? ...
9-11-2020 at 12:33
by: Dr.Bob
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