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H2O2 storage stability
$90 
You do know that Bacquacil "Shock" is 30% H2O2? I got 5l of that for NZ$28 at my ... |
25-4-2005 at 23:36
by: Twospoons |
Preparation of elemental phosphorus
jimmyboy, solder is tin/lead, not tin/zinc. Unless you've got lead free solder which is ~95% ti ... |
13-4-2005 at 20:55
by: Twospoons |
mercury sources ??
Mercury tilt, float and vibration switches are still for sale through electronics component distribu ... |
13-4-2005 at 13:42
by: Twospoons |
More on PbO2 electrodes
From what I've read you want the Beta form, because of its higher conductivity. |
10-4-2005 at 13:56
by: Twospoons |
Fixing Electronic Scale
I know this sounds stupid and obvious, but my experiences in the PC repair industry leads me to ask ... |
4-4-2005 at 17:31
by: Twospoons |
picric acid in fuel mileage additive
The patent looks reasonable - its informative and detailed, and appears to be based on prior art reg ... |
30-3-2005 at 19:58
by: Twospoons |
Birkeland-Eyde reactor for making nitric acid.
It occured to me that an HID lamp ballast and ignitor circuit might be the way to go. The ignitor p ... |
29-3-2005 at 15:07
by: Twospoons |
Induction heating
I'm interested. Especially as we could then grow cubic zirconia crystals.[url=http://en.wikipe ... |
28-3-2005 at 17:55
by: Twospoons |
Copper oxides removing...
table salt and vinegar always worked for me. |
23-3-2005 at 14:53
by: Twospoons |
Measuring pressure a la Pirani's Vacuum Meter
This is closer to what you are doing. In [url=http://www.ee.ualberta.ca/~schmaus/vacf/thermis.html] ... |
23-3-2005 at 14:45
by: Twospoons |
Measuring pressure a la Pirani's Vacuum Meter
The displayed pressure will depend less on atmospheric pressure, and more on atmospheric temperature ... |
22-3-2005 at 18:44
by: Twospoons |
Malic Acid (Apple Acid)
Seems like it might be a lot of work for something that is easily purchased from a brewers supply sh ... |
22-3-2005 at 13:46
by: Twospoons |
The future, and oil
Too many people. Thats the real problem.
As for the US dollar - if the Chinese ever unpeg the yu ... |
22-3-2005 at 13:41
by: Twospoons |
Copper plating isn't going too well
Plating on a thin layer of nickel first may help with adhesion of the copper. |
21-3-2005 at 17:50
by: Twospoons |
Removing stainless steel lining from copper cookware
[quote][i]Originally posted by unionised[/i]
BTW, if heating stainless above 700C kills it, how d ... |
21-3-2005 at 14:30
by: Twospoons |
Birkeland-Eyde reactor for making nitric acid.
Since an arc has a negative resistance characteristic (i.e. resistance drops as current increases) M ... |
17-3-2005 at 21:51
by: Twospoons |
Removing stainless steel lining from copper cookware
A solder joint out of the brine will be just fine. This is just a simple battery cell after all. |
16-3-2005 at 21:39
by: Twospoons |
Removing stainless steel lining from copper cookware
If you heat the whole thing to about 800C, then cool very slowly, most of the chromium ends up as th ... |
16-3-2005 at 19:47
by: Twospoons |
Strange Liquid dispense
Judging by the patent it may be a micro-pipette. I have an adjustable one that allows you to repeat ... |
16-3-2005 at 19:36
by: Twospoons |
Should The_Gender_Changer be banned?
Much as I dislike slagging another member, TGC's gibberish posts do clutter threads rather anno ... |
16-3-2005 at 19:29
by: Twospoons |
Identify a mineral. Help needed!
Haematite? Try abrading with very fine wet sandpaper (like 1000 grit). Haematite with give a dark ... |
15-3-2005 at 13:47
by: Twospoons |
Temperature control circuit
CHROMEL/ALUMEL is a type K thermocouple, probably the most common in existance (must be cheap or som ... |
14-3-2005 at 18:29
by: Twospoons |
Pump for high temperature liquids.
V-belt and pulleys from engineering shop. The oil pump probably has a v-belt pulley on it already. |
7-3-2005 at 20:02
by: Twospoons |
Experiments with liquid Nitrogen...
How about [url=http://www.webcom.com/cfsc/scpart1.html]Making high TC superconductor[/url] |
3-3-2005 at 19:29
by: Twospoons |
Magnesium Alloy Fire extinguishing
Liquid nitrogen is useless for this sort of cooling. Non-contact boiling puts a nice insulating lay ... |
3-3-2005 at 14:30
by: Twospoons |
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