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High Vacuum Systems
[rquote=688825&tid=159987&author=akmetal]My understanding of the theory of
operation is th ...
23-11-2023 at 07:50
by: Rainwater
Sulfuric acid purification problems
The battery acid source is very pure sulfuric acid around %30 consentration
Very expensive to, here ...
23-11-2023 at 05:09
by: Rainwater
Building a Chemputer
On your drawing you have
"Input" > resistor > 'A'. Assuming "input" is Vcc to power the led, ...
22-11-2023 at 17:45
by: Rainwater
Weird things during nitric acid synthesis
I use a water asporator to place the appratus under reduced pressure.
Any leaks, leak in, keeping t ...
21-11-2023 at 18:28
by: Rainwater
Building a Chemputer
Permanent home - https://github.com/Adivinedude/PCM_Modbus
1 uno with the hardware I linked can run ...
21-11-2023 at 17:14
by: Rainwater
Building a Chemputer
Sorry,i broke the code yesterday and
im horrible about keeping backup files.
I post gethub link a ...
20-11-2023 at 04:58
by: Rainwater
500mL 24/40 soxhlet extractor + carrying case
No pictures or nothin?
Post an ebay link. Youll get a buyer
19-11-2023 at 02:21
by: Rainwater
Building a Chemputer
Last major update until parts come in.
A setup a structer to write custom driver code.
I included ...
18-11-2023 at 16:14
by: Rainwater
Nitric acid from mild electrochemistry
https://www.sciencemadness.org/whisper/viewthread.php?tid=159094
I pipe the gas into a series of ba ...
18-11-2023 at 12:37
by: Rainwater
Building a Chemputer
So just got home from work and some parts came in,
nano board, and max485,
still missing h-bridg ...
17-11-2023 at 18:28
by: Rainwater
Sulfuric acid purification problems
Flame test.
Found this while googleing
[file]99873[/file]
[sub]solubility of CaSO4 in H2SO4[/sub] ...
16-11-2023 at 11:49
by: Rainwater
Sulfuric acid purification problems
You can try and freeze it out using an ice bath.
Melting point is about 10c.
16-11-2023 at 01:32
by: Rainwater
Sulfuric acid purification problems
[rquote=688601&tid=159968&author=Sir_Gawain]
What’s going on? The only thing I can think ...
15-11-2023 at 16:43
by: Rainwater
Building a Chemputer
For the ATmega series of mcu,
the toolchain includes some predefined c headers, ISR() is a #define ...
14-11-2023 at 19:58
by: Rainwater
Recovery of silver, mercury and chromium from acid mixture
[quote]But one thing... since I accumulated at least 4-5 litres of solution[/quote]

After you fin ...
14-11-2023 at 06:28
by: Rainwater
Recovery of silver, mercury and chromium from acid mixture
[quote]I tried with iron and copper but without succes, or at least I didn't see any amalgam (the "i ...
13-11-2023 at 15:14
by: Rainwater
Building a Chemputer
[url=https://www.dropbox.com/scl/fo/o3gupwaklhw93q22bv665/h?rlkey=tnno7nxenyoc0v7cky3p3oepx&dl=0 ...
12-11-2023 at 05:45
by: Rainwater
Recovery of silver, mercury and chromium from acid mixture
[quote]
No offense, but why would you recover mercury by distillation when there are plenty of safe ...
11-11-2023 at 05:34
by: Rainwater
Recovery of silver, mercury and chromium from acid mixture
I would use a test tube
add copper foil, slowly and in small amounts until no more disolved

Shou ...
11-11-2023 at 03:07
by: Rainwater
Building a Chemputer
If my stuff would get delivered I'd be able to finish this in a few hours but my area
is getting h ...
10-11-2023 at 17:07
by: Rainwater
On the heating of Arsenic in H2SO4
Lookup David Hahn, Robert Oppenheimer, Marie Curie,Harold Maxwell, Louis Slotin, Karen Wetterhahn.
...
10-11-2023 at 11:42
by: Rainwater
Exploding aircons and fridges, really ?
Propane, butane, methane.
Any substance that can go from a liquid to a gas, with pressure change c ...
10-11-2023 at 11:02
by: Rainwater
Building a Chemputer
So I got a board in today,
ordered the nano, and they sent the micro. $4 vs $16
So win for me
It ...
9-11-2023 at 20:14
by: Rainwater
Building a Chemputer
Std-3 = flame spread/smoke rating.
94-0v voltage rating of the pcb material.
Cant make out the oth ...
9-11-2023 at 03:43
by: Rainwater
Building a Chemputer
Itchin for an update.

I hope to have a working prototype of a ModBus pump controller working by t ...
8-11-2023 at 13:02
by: Rainwater
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