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Sodium sulphide
[rquote=682944&tid=19201&author=B(a)P][rquote=682939&tid=19201&author=Admagistr][rqu ... |
4-4-2023 at 18:53
by: Cathoderay |
Sodium sulphide
Here is a link to Doug's Lab making iron sulfide.
https://www.youtube.com/watch?v=CLBdVM9_FWg
Fo ... |
4-4-2023 at 10:25
by: Cathoderay |
Brand new hotplate won't boil water?
I don't have one of those Chinese hot plates, however from various sources of info I think there is ... |
24-3-2023 at 07:48
by: Cathoderay |
Selling Off Chemical Lab
Could you provide a bit more help finding your stuff?
|
24-3-2023 at 07:21
by: Cathoderay |
Knick ph-meter Type 35
Actually I was leaning toward '60s to '70s judging from the tubes.
I'm not an expert on chemistry ... |
23-3-2023 at 20:27
by: Cathoderay |
Brand new hotplate won't boil water?
Also I think that many people put too much stock in those infrared thermometers.
Among other things ... |
23-3-2023 at 07:59
by: Cathoderay |
Brand new hotplate won't boil water?
[rquote=682594&tid=159426&author=PirateDocBrown]I suspect these Chinese ones are made for an ... |
23-3-2023 at 07:33
by: Cathoderay |
Knick ph-meter Type 35
My background is in electronics. I also restore vintage electronics.
Tubes do wear out of course, b ... |
22-3-2023 at 09:23
by: Cathoderay |
Has anyone safety coated their own glassware?
Are the vials for display or do you remove material from time to time?
If for display only you mi ... |
21-3-2023 at 16:27
by: Cathoderay |
Manganese sulfate not crystallizing
RU_KLO, it is true that boiling down will not help purify the substance, but you can crystallize it. ... |
10-3-2023 at 18:11
by: Cathoderay |
Manganese sulfate not crystallizing
I think you are a bit unclear.
Sounds like you have two problems, purification and crystallization, ... |
10-3-2023 at 08:49
by: Cathoderay |
Gold or not Gold, thats the question
Do check around, from a brief search I made, the price can vary a lot.
A "Gold Broker" may charge a ... |
3-3-2023 at 10:46
by: Cathoderay |
Gold or not Gold, thats the question
I don't know were you are located, but you might be able to buy a small piece of gold (99.9% pure) a ... |
1-3-2023 at 10:00
by: Cathoderay |
Gold or not Gold, thats the question
I take it that your goal is to obtain a pure gold salt rather than gold metal.
You also are not int ... |
28-2-2023 at 18:54
by: Cathoderay |
Gold or not Gold, thats the question
NileRed has a series of two videos about recovering gold from electronic parts.
Note that PCB proba ... |
27-2-2023 at 16:55
by: Cathoderay |
Gold or not Gold, thats the question
I don't know a lot about gold recovery. I do know about electrical equipment.
Do you realizes the c ... |
27-2-2023 at 07:56
by: Cathoderay |
Black Flame?!
It seems Physicists and Chemists do not talk with each other very much.
That is a good demonstratio ... |
23-2-2023 at 14:27
by: Cathoderay |
Insufficient power for heater - stirrer ?
[rquote=681673&tid=159346&author=Tsjerk]Yes, and when you use insulation to get things to bo ... |
19-2-2023 at 09:00
by: Cathoderay |
Nitrocellulose Rocket fuel
I have no idea of your location.
You didn't explain your experience level, yet your posting was put ... |
14-2-2023 at 12:00
by: Cathoderay |
Nitrocellulose Rocket fuel
That's like saying " I made some nitroglycerine, how do I use it to open a bank vault?" or "I have a ... |
13-2-2023 at 10:59
by: Cathoderay |
Suitable manometer
I wasn't after so much detail about your background.
If English wasn't your first language that mig ... |
9-2-2023 at 18:16
by: Cathoderay |
Suitable manometer
There are many devices that can be used to measure a vacuum level.
I was talking about two basic wa ... |
8-2-2023 at 18:32
by: Cathoderay |
First big accident, almost burned my house
You know that with enough oxygen aluminum will burn, especially thin aluminum.
Use steel or ceramic ... |
7-2-2023 at 13:20
by: Cathoderay |
Suitable manometer
I think there is some confusion about the way the amount of vacuum is stated.
There is absolute p ... |
7-2-2023 at 13:05
by: Cathoderay |
Zinc voltammetry: some problems
What is your separator?
|
7-2-2023 at 12:25
by: Cathoderay |
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