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Controlling a microwave oven
No. The magnetron is a vacuum tube with a heated cathode. It requires a fairly narrow voltage range ... |
16-8-2010 at 11:54
by: densest |
Unusual Chemicals, what to do with them ...?
Most of the dyes could be used in selective biological stain systems. Fuchsine, malachite green, con ... |
16-8-2010 at 07:40
by: densest |
1k for new labware, What would you get.
Organic? Inorganic? All of this will have to be used. $1K doesn't go very far for new equipment.
[ ... |
15-8-2010 at 18:42
by: densest |
Potassium from lithium in an organic solvent
If anyone can get Spectrum Chemical to ship, triglyme cas#112-49-2 is available for $15/250g, $15/ki ... |
15-8-2010 at 15:23
by: densest |
Potassium from lithium in an organic solvent
As a confirmation that the low conductivity I'm measuring with butyl ethers is valid, I ran some dei ... |
15-8-2010 at 13:08
by: densest |
US Hotplate/stirrer frequency conversion
Sort of on topic: I find that stirrers always "want" to go too fast. What would be useful is somethi ... |
14-8-2010 at 22:26
by: densest |
Potassium from lithium in an organic solvent
I couldn't find my cellosolve (ethylene glycol methyl ether) but I could find some butyl cellosolve ... |
14-8-2010 at 22:00
by: densest |
US Hotplate/stirrer frequency conversion
Were life so simple - a rheostat fails "open", passing no current. The symptom of the motor running ... |
14-8-2010 at 10:52
by: densest |
Potassium from lithium in an organic solvent
@nicodem - verrrry interesting! I have dibutyl diglyme (the stuff that collects AuCl4- & various ... |
13-8-2010 at 09:10
by: densest |
pipe thread sealing
I'm not sure I understand "3-4 turns on hand tightening, and only 1 turn possible on the wrench". Do ... |
12-8-2010 at 21:04
by: densest |
US Hotplate/stirrer frequency conversion
This has nothing to do with line frequency. What kind of step down converter did you use? Is it a tr ... |
12-8-2010 at 20:49
by: densest |
Potassium from lithium in an organic solvent
The only glyme I have is butyl diglyme. It dissolves a little potassium iodide. The pictures show 0. ... |
12-8-2010 at 17:10
by: densest |
Zeolite - oxygen concentrator?
Are you doing this for fun or are you going to use the oxygen? Rebuilt medical concentrators are ava ... |
12-8-2010 at 09:32
by: densest |
Potassium from lithium in an organic solvent
Hot chlorine from electrolysing molten KCl would probably etch every piece of metal in your lab & ... |
11-8-2010 at 08:25
by: densest |
pipe thread sealing
@watson.fawkes - according to "Machinery's Handbook", NPTF (F=fuel) threads are designed such that t ... |
11-8-2010 at 08:16
by: densest |
good pump?
Piston pumps still use belts. The load is cyclical and the belt evens it out a little bit and the me ... |
10-8-2010 at 08:10
by: densest |
Phenolphthalein Decomposition
It's a matter of proportions & math... in your bag, the tiny amount of nitrogen oxides escaping ... |
8-8-2010 at 21:34
by: densest |
Distillation rate, what's reasonable?
No. Depending on the vapor pressure of the other constituents at the various temperatures along your ... |
8-8-2010 at 21:22
by: densest |
luminol
I made luminol as part of the O-chem class in college. I got really good yield - almost the one in t ... |
8-8-2010 at 16:55
by: densest |
Labels for chemical bottles
One thing I've seen work (for a while) is using wide transparent tape over the label. It's best if t ... |
8-8-2010 at 13:51
by: densest |
Homemade capacitor for a power supply
@chief - I'm attaching a Nichicon article about their manufacturing methods. That article, and all t ... |
6-8-2010 at 06:39
by: densest |
Anyone up for some platinum?
It looks like it could be platinum - the sheen is not like solder!
I expect some dozens of bids i ... |
5-8-2010 at 19:50
by: densest |
diiodomethane
Hmmmm..... probably from a brain short circuit. The solid is 2.423 g/cm3. Oh well... too little sle ... |
4-8-2010 at 13:13
by: densest |
Perchloric acid and bismuth
Bi2O3, Mg-Al, and CuO are the ingredients for the crackling microstars currently popular in firework ... |
4-8-2010 at 12:05
by: densest |
diiodomethane
Cesium acetate, according to an old Chem Rubber Handbook, will dissolve 946 g in 100ml of water  B ... |
4-8-2010 at 08:58
by: densest |
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