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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
silver from silver-solder ? [rquote=686809&tid=10833&author=Fantasma4500]just wanted to share my success with seperating ...	19-8-2023 at 16:27 by: Cathoderay
Chemical Testing Questions Carlrodeo, it somewhat depends on how badly you want to know about the purity. I'm interested in ...	16-8-2023 at 09:47 by: Cathoderay
Chemical Testing Questions [rquote=686619&tid=159798&author=carlrodeo][rquote=686617&tid=159798&author=Cathoder ...	14-8-2023 at 09:49 by: Cathoderay
Chemical Testing Questions I don't know where you found that procedure, but it won't work to find the purity of the Na(NO3). K ...	13-8-2023 at 10:45 by: Cathoderay
Did I ruin my digital vacuum gauge? No I don't have a digital gauge, but I have used dial mechanical gauges. The problem would just b ...	17-4-2023 at 14:46 by: Cathoderay
Did I ruin my digital vacuum gauge? Chemist1357, another way of explain it is that you are measuring the temperature at one spot (boilin ...	17-4-2023 at 08:04 by: Cathoderay
Mel-Temp Replacement Bulb It would be vitally important that you read the voltage rating on the bulb base. It isn't quite cle ...	14-4-2023 at 15:38 by: Cathoderay
Did I ruin my digital vacuum gauge? It is probably a good thing to add that you are not running the distillation normally. Normally you ...	13-4-2023 at 06:59 by: Cathoderay
Did I ruin my digital vacuum gauge? I think what Rainwater is saying is that you have a high flow rate of gas (steam) flowing into the p ...	12-4-2023 at 12:30 by: Cathoderay
Did I ruin my digital vacuum gauge? I found an online manual for the VG200. It doesn't seem to be all that accurate. It is common for p ...	11-4-2023 at 19:18 by: Cathoderay
Did I ruin my digital vacuum gauge? Did you try replacing the battery? Can you see any damage when looking around the battery? The int ...	11-4-2023 at 07:08 by: Cathoderay
Stir bar get stuck in RBF I'm supposing that there is. You never know what a used stir bar has been exposed to. Of course th ...	10-4-2023 at 07:52 by: Cathoderay
EU illegal chemicals -> useful legal ones? Part of it is that he's an Aussie. Some people don't mind it much. https://www.youtube.com/watch?v= ...	7-4-2023 at 07:08 by: Cathoderay
Stir bar get stuck in RBF Is that "fish" one that you bought or is it a used one? Some magnetic materials handle heat bette ...	7-4-2023 at 06:48 by: Cathoderay
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