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Switching supply for electrolysis
I would not buy SMPS for lab use if its design is not well tested for reliability. Like woelen sayd ... |
22-7-2009 at 12:59
by: chromium |
A lab 40V 250W power supply
Its great you are back again! I have followed your sugestions so far. As you know from U2U i disconn ... |
16-9-2008 at 00:04
by: chromium |
Home chemist raided in MA, lab seized.
[quote][i]Originally posted by len1[/i]
1) Interestingly the legislation makes it clear just havin ... |
17-8-2008 at 06:16
by: chromium |
Home chemist raided in MA, lab seized.
Why exactly you do not tell us who it is?
[quote][i]Originally posted by no1uno[/i]
Notwithstand ... |
16-8-2008 at 22:56
by: chromium |
Home chemist raided in MA, lab seized.
It's not as much about money as about making society as safe as possible even if this costs a lot of ... |
13-8-2008 at 08:02
by: chromium |
If water absorbs infrared, how come pools don't get hotter?
Evaporation carries a lot of heat away. In case of water this often results in temperature drop of s ... |
31-7-2008 at 05:33
by: chromium |
What reagent would you like to see an illustrated guide for?
Here are some that come to mind and are not stated by others: Making soluble relatively pure salts o ... |
29-7-2008 at 02:01
by: chromium |
Vacuum controlled spark gap
[quote][i]Originally posted by woelen[/i]
Do you really think that all energy goes into the spark i ... |
21-7-2008 at 07:29
by: chromium |
Vacuum controlled spark gap
220nF and 2000V is aproximately 0.5J but 5KV 40uF contains aproximately 500 joules when fully charg ... |
20-7-2008 at 11:58
by: chromium |
GBL: 600 raids in Germany, Austria, Switzerland
[quote][i]Originally posted by len1[/i]
Thats quite interesting - I'd hazard a guess that that half ... |
19-7-2008 at 01:30
by: chromium |
GBL: 600 raids in Germany, Austria, Switzerland
[quote][i]Originally posted by len1[/i]
I didnt know chems were 'not watched' in Russia. Maybe tha ... |
18-7-2008 at 05:33
by: chromium |
GBL: 600 raids in Germany, Austria, Switzerland
@len1: You have done greatest job on making chemicals available for those who can not buy them but i ... |
17-7-2008 at 22:34
by: chromium |
GBL: 600 raids in Germany, Austria, Switzerland
I do not belive that what Woelen described here can ever be a law as this would need reorganization ... |
16-7-2008 at 12:12
by: chromium |
Home Science logo competition!
Thanks for all of your sugestions! This logo is not actually much more than just compilation of idea ... |
23-3-2008 at 14:51
by: chromium |
Home Science logo competition!
Maybe something like this? |
22-3-2008 at 15:51
by: chromium |
How do you distil a foaming liquid?
I distilled couple of years ago a lot of certain cleaning fluid wich consisted of 30% metanol, remar ... |
21-3-2008 at 14:22
by: chromium |
PC PSU to laboratory PSU
I wonder why people do not want to experiment with simple (or simplified) switchmode circuits. Ever ... |
20-1-2008 at 00:32
by: chromium |
water electrolysis
[quote][i]Originally posted by -jeffB[/i]
Yes, the H2/O2 flame is hot. But so is a carbon arc stru ... |
17-1-2008 at 11:28
by: chromium |
Vacuum From Peristaltic Pumps
I may be wrong but i am sceptical on this type of tubing. Mainly because it is too strechable and sm ... |
16-1-2008 at 12:42
by: chromium |
Vacuum From Peristaltic Pumps
Theoretically it can indeed go to very low pressures but there are tehnical difficulties that must b ... |
15-1-2008 at 01:41
by: chromium |
Vacuum From Peristaltic Pumps
I once tried to make one but i ran into problems which i was unable to solve.
Tubing did not stay ... |
13-1-2008 at 14:20
by: chromium |
Alternative Solvents and New Solvents - General Discussion
My logic is very simple - if there are lot of people who were exposed to that chemical much more tha ... |
8-1-2008 at 10:45
by: chromium |
Alternative Solvents and New Solvents - General Discussion
Butyl acetate is said to be less harmfull than most solvents. Ethanol is probably as harmelss as sol ... |
8-1-2008 at 05:26
by: chromium |
Chlorine - Illustrated Practical Guide
Very good artidles (this one and about diethyl ether). Only criticism that comes to mind is that tit ... |
7-1-2008 at 15:20
by: chromium |
Illustrated key syntheses in chemistry
Solo, good old sciencemadness can not be back because this was time when threads were started but no ... |
25-12-2007 at 14:22
by: chromium |
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