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Monthly or bi-monthly "exotic" group chemical/reagent purchase - w/re-shipping to members
I really like this idea. It might require a chemical handler's license in some states.
There are ... |
14-8-2018 at 08:05
by: JJay |
Seperating chrome from iron and nickel, stainless steel
Chromate is hexavalent. |
13-8-2018 at 12:19
by: JJay |
Where can I buy precious metals for cheapest prices?
I think this is worth mentioning again: There is an endless supply of people in every country who ar ... |
12-8-2018 at 18:19
by: JJay |
Optimal Fractional Distillation Drip Rate
I usually monitor head temperature while trying to keep the distillation rate constant. It often bec ... |
12-8-2018 at 16:57
by: JJay |
Optimal Fractional Distillation Drip Rate
Hmm... DWSIM looks like an interesting piece of software.
Those are some good links too. Apparent ... |
12-8-2018 at 16:10
by: JJay |
Optimal Fractional Distillation Drip Rate
One drip per second through a 30 cm Vigreux seems to lead to decent separations, but it's not fast ( ... |
12-8-2018 at 14:22
by: JJay |
Optimal Fractional Distillation Drip Rate
The drip rate is of particular interest because for a given distillation, it is inversely proportion ... |
12-8-2018 at 13:14
by: JJay |
Optimal Fractional Distillation Drip Rate
How do you determine the best drip rate to use for fractional distillation? I usually aim for one dr ... |
12-8-2018 at 12:52
by: JJay |
Where can I buy precious metals for cheapest prices?
Put an ad on Craigslist saying that you pay cash locally. Meet in public. Turn down shady deals. Off ... |
12-8-2018 at 08:11
by: JJay |
The Short Questions Thread (4)
Thanks!  |
10-8-2018 at 20:21
by: JJay |
Handling toxic gasses in glassware
I've done the long tube trick a few times and have never had any problems with it, but it is a bit s ... |
10-8-2018 at 11:11
by: JJay |
wiring PID controlled heating tape from 230V to 120V
What do you mean by "switching power supply?"
My PID controller connects directly to a large soli ... |
10-8-2018 at 03:40
by: JJay |
Everyday Chemistry
I don't know what happened to it, and I'm not going to speculate. I had probably at least 50-100 pos ... |
10-8-2018 at 01:16
by: JJay |
The Short Questions Thread (4)
I think so. I hope you post some more. I keep watching for new Chem Player videos.  |
10-8-2018 at 00:43
by: JJay |
Everyday Chemistry
I made some nitric acid from hardware store chemicals. I haven't titrated it yet, but I'm guessing i ... |
9-8-2018 at 02:45
by: JJay |
wiring PID controlled heating tape from 230V to 120V
I use a triac dimmer in-line with my PID controller to cut the amperage. You could get something lik ... |
8-8-2018 at 11:51
by: JJay |
heating mantle size
500 mL and 3000 mL are good sizes for heating mantles. You can usually get away with a heating bath ... |
7-8-2018 at 14:23
by: JJay |
Which would be more a useful gas: Nitrogen or Argon?
For the most part, nitrogen is fine, but nitrogen does react under a few circumstances such as the o ... |
7-8-2018 at 10:32
by: JJay |
Latest chemical order?
I have. My plan was to use a steel paint can as a flask with a copper coil wound through a bucket of ... |
7-8-2018 at 01:17
by: JJay |
Latest chemical order?
Polystyrene, for thermolysis to styrene.
[file]69804[/file] |
6-8-2018 at 22:42
by: JJay |
Some fungus growing on grass
That's interesting... about half of the ergots I have found so far were growing on fescues. This art ... |
6-8-2018 at 15:24
by: JJay |
Some fungus growing on grass
That seems reasonable.
I tend to think that if a lot of culture can be used for inoculation, the ... |
6-8-2018 at 11:31
by: JJay |
Responsible Chemical Waste Disposal
That seems reasonable. Barium sulfate is so inert that you could probably grow vegetables in it (not ... |
6-8-2018 at 00:32
by: JJay |
Everyday Chemistry
Here's the barium acetate solution that was left behind after gravity filtering. It has a slight sul ... |
5-8-2018 at 22:25
by: JJay |
Responsible Chemical Waste Disposal
What is the best way to dispose of barium waste? Neutralize with sulfuric acid and dispose of as a p ... |
5-8-2018 at 21:57
by: JJay |
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