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How hot old watch and clock?
Radium dial clocks were quite popular during that era.
Given the half life of 1600 years, they are ...
16-11-2017 at 18:33
by: macckone
Any interest in Tube Furnances?
A K-type thermocouple will be just as good and much cheaper, If you
want to go above 1200C you are ...
14-11-2017 at 20:57
by: macckone
Any interest in Tube Furnances?
That PID is really good price but the probe is a rip off.
The probe cost is already covered under t ...
13-11-2017 at 19:45
by: macckone
Diethyl sulfate synthesis that's too good to be true?
diethyl sulfate is an intermediate in the production of ethyl ether or
ethylene from ethyl alcohol ...
12-11-2017 at 16:01
by: macckone
Any interest in Tube Furnances?
Buying an off the shelf PID controller would be ideal if you have unlimited funds.
However an ardui ...
12-11-2017 at 13:43
by: macckone
Any interest in Tube Furnances?
Jjay, that will work as long as you don't need close tolerance control.
For close tolerance work, y ...
10-11-2017 at 21:59
by: macckone
Any interest in Tube Furnances?
22mm id tubing can be had for around $35
Kanthal wire is pretty cheap $10.
Insulation can be had f ...
10-11-2017 at 20:13
by: macckone
Any interest in Tube Furnances?
Quartz tube will work up to 1200C, Kanthal A1 wire up to 1400C, so 1200C max
assuming reasonable l ...
10-11-2017 at 18:37
by: macckone
Lists of Illegal Substances
As stated above, laws differ among states, counties and even cities.
Proper storage is a must. Lab ...
10-11-2017 at 18:07
by: macckone
Manganese dioxide drying fail - what the heck?
Here is a video of an alternative process that doesn't use the fractional crystallization which can ...
5-11-2017 at 10:53
by: macckone
Manganese dioxide drying fail - what the heck?
Better method of purifying this stuff is to just add hydrochloric acid right off
the bat, and disso ...
5-11-2017 at 09:50
by: macckone
Using vacuum distilling aparatus as a dessicator
desiccating, vacuum and heat are the usual ways to remove water.
everything is going to fall in one ...
4-11-2017 at 17:20
by: macckone
Using vacuum distilling aparatus as a dessicator
This is not going to be efficient unless you have something that moves the air.

But yes capping t ...
4-11-2017 at 10:11
by: macckone
filtering dirty concentrated sulfuric acid
Good quality diatomaceous earth is practically pure silica. Metal oxides are
usually tested for be ...
4-11-2017 at 09:51
by: macckone
sodium permissive membrane
obligatory UTFSE warning.

https://www.sciencemadness.org/whisper/viewthread.php?tid=77512
3-11-2017 at 19:17
by: macckone
Tinkering with flyback generator for ozone
I did a similar circuit but I put a totem pole tranistor configuration to drive the
mosfet. I als ...
3-11-2017 at 19:14
by: macckone
Porous Pot for Voltaic Cell
The polypropylene bags need to be rinsed with alcohol to get a
good wetting which may or may not i ...
30-10-2017 at 17:56
by: macckone
filtering dirty concentrated sulfuric acid
polypropylene funnel, glass wool and top it with water filter grade diatomaceous earth. Only trick ...
29-10-2017 at 18:55
by: macckone
Porous Pot for Voltaic Cell
polypropylene 5 micron hepa vacuum cleaner bags.

https://www.homedepot.com/p/Cen-Tec-Replacement- ...
29-10-2017 at 18:51
by: macckone
Calcium hydroxide and ammonium nitrate product?
That patent is a good find. It looks like a combination zinc/cobalt/aluminum oxide catalyst. Any s ...
29-10-2017 at 18:43
by: macckone
Calcium hydroxide and ammonium nitrate product?
you can get five ft of wire for as little as $340, make your own mesh, I am guessing five ft will ma ...
29-10-2017 at 17:08
by: macckone
Storage bottles
Expensive caps:
https://www.calpaclab.com/caps-with-ptfe-liners/

or

http://www.qorpak.com/ca ...
22-10-2017 at 13:44
by: macckone
40% formaldehyde solution from paraformaldehyde?
A base will catalyze paraformaldehyde to formaldehyde conversion. At high temp, it moves toward for ...
22-10-2017 at 13:06
by: macckone
Could Greed end research gate?
One important thing to note is that sci-hub does not use US servers or domain registrars so a us cou ...
21-10-2017 at 16:47
by: macckone
Telling apart Potash from Cinnabar
potassium carbonate is quite soluble in water.
potassium chloride is even more soluble.
mercuric o ...
1-8-2017 at 21:37
by: macckone
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