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Leaking Unions
The only time I've heard of sulfuric acid used on joints is when distilling concentrated sulfuric ac ...
19-4-2025 at 09:02
by: Cathoderay
Leaking Unions
I figured out that those numbers are Amazon item identifiers.
So you have a model HMSC500 mantle (5 ...
18-4-2025 at 20:07
by: Cathoderay
Leaking Unions
There is some confusion, I think those are the serial numbers. The heating mantles have model number ...
17-4-2025 at 16:06
by: Cathoderay
Leaking Unions
DanteDominic, wait a minute.
You said something about checking it before and after work. At your st ...
16-4-2025 at 20:23
by: Cathoderay
Best thing/way to clean hotplate?
Since the hot plate top is a ceramic and not a steel grill I would be very careful about dumping muc ...
28-3-2025 at 06:19
by: Cathoderay
I want to hear your favorite chemistry demonstrations
I also found this. Maybe what you saw was a "Sugar Snake".
https://en.wikipedia.org/wiki/Black_snak ...
18-3-2025 at 06:36
by: Cathoderay
I want to hear your favorite chemistry demonstrations
That sounds like Pharaoh's Serpent (mercury thiocyanate).
https://www.youtube.com/watch?v=PSDpgBOtS ...
17-3-2025 at 06:06
by: Cathoderay
Spectracide Stump Remover Discontinued
However Tannerite may contain other things like ammonium perchlorate.
https://en.wikipedia.org/wiki ...
15-3-2025 at 11:28
by: Cathoderay
Best thing/way to clean hotplate?
Corning recommends non-abrasive cleaners
You might try a "Glass cook top" cleaner. It may similar t ...
7-3-2025 at 07:40
by: Cathoderay
latest glassware purchase
Some additional information.
Light Dispersion.
https://en.wikipedia.org/wiki/Dispersion_(optics)
...
6-1-2025 at 10:52
by: Cathoderay
latest glassware purchase
Morgan, that could be a dispersion prism used in a spectroscope. Something that separates light int ...
6-1-2025 at 10:23
by: Cathoderay
Chemical Price Comparison Software in the making..
I have ordered many things over the years from McMaster-Carr as an individual. The shipping method i ...
17-12-2024 at 15:41
by: Cathoderay
Uses for a sodium vapour lamp
Not a lot of chemistry uses. Some physics uses.
One scientific use of a sodium lamp was the Michels ...
4-12-2024 at 17:58
by: Cathoderay
Mystery Glassware Identification Thread
[rquote=695790&tid=31602&author=Organikum]Got this lamp, labeled "Phillips M13", 0,5 ohm and ...
24-11-2024 at 10:42
by: Cathoderay
Mystery Glassware Identification Thread
My guess is that the small gray cylinder near the pump input is a vacuum switch. When the vacuum get ...
2-12-2023 at 08:02
by: Cathoderay
High Vacuum Systems
akmetal
Did you look at the datasheet for these things?
I don't think you have any idea of how dif ...
24-11-2023 at 17:10
by: Cathoderay
Sulfuric acid purification problems
I noticed in the comments of that NileRed video that someone said they tried the peroxide method wit ...
22-11-2023 at 11:23
by: Cathoderay
Sulfuric acid purification problems
I thought I posted something last night but it isn't here now. I must have clicked the wrong thing.
...
21-11-2023 at 09:53
by: Cathoderay
Sulfuric acid purification problems
OK. That type of precipitate is called "flocculent". That could be something organic if you didn't ...
20-11-2023 at 09:51
by: Cathoderay
Sulfuric acid purification problems
Seems like "Out of the frying pan and into the fire."
That seems like that is a lot or precipitate, ...
19-11-2023 at 19:56
by: Cathoderay
Sulfuric acid purification problems
Manufacturers mix additives to sulfuric drain cleaners (inhibitors) so that it is less corrosive to ...
17-11-2023 at 18:49
by: Cathoderay
Help with calculations for copper plating solution
The solution to use depends on what you are doing. Some baths are best for building thick layers of ...
26-10-2023 at 06:50
by: Cathoderay
Manufacturer claims their skillets can withstand temperature of 30000 F
Well the devil is in the details.
As far as I can see the manufacturer does not say the pans can wi ...
21-10-2023 at 09:57
by: Cathoderay
The logic behind symbols of chemical elements ?
That Wikipedia article is a very condensed history which doesn't do it justice.
Naming of the elem ...
11-10-2023 at 09:23
by: Cathoderay
Crystal Growing
I have heard of coating the inside of the container with wax.
Don't let the solution get between th ...
21-9-2023 at 16:46
by: Cathoderay
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