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Melt-blown PP membrane from face mask
Face masks, which are suddenly available due to (thanks to?) the coronavirus pandemic contain a poly ...
30-9-2020 at 02:38
by: Heptylene
Preparation of propargyl alcohol (2-propyn-1-ol)
If you have the DOI for the article, there is a chance you can find the PDF on sci-hub. I would love ...
30-9-2020 at 01:59
by: Heptylene
Using industrial chemical processes at home
There have been attempts at the Ostwald by a few members. I know of at least chemetix's and WGTR's a ...
23-9-2020 at 05:14
by: Heptylene
Sealing the edges of a Perchlorate Cell Anode
I don't think sealing is needed. Titanium passivates when used as anode, so the parts not coated by ...
23-9-2020 at 05:05
by: Heptylene
Reaction Cooling Equipment. What's out there?
If you can find one for cheap, get a recirculating chiller. New they cost about $5k, but you can get ...
20-9-2020 at 12:17
by: Heptylene
Flat Flange lid not grounded o-ring
Maybe you can grind the glass yourself? With some abrasive compound and water on a flat surface I'm ...
17-9-2020 at 07:06
by: Heptylene
Separate EtOH and IPA
Perhaps with a packed column and distillation head you can manage some separation but it would take ...
17-9-2020 at 07:04
by: Heptylene
Amateur chemistry is putting billions at risk!
The r/chemistry subreddit is a dumpster fire in my opinion. People talking about things they don't k ...
16-9-2020 at 13:00
by: Heptylene
Vacuum aspirator using DMSO
[rquote=644666&tid=151383&author=Fyndium]When you say "sufficient for ... some vacuum distil ...
16-9-2020 at 07:28
by: Heptylene
Is it too much to ask to wear a mask?
From the article:
"Scientific American has never endorsed a presidential candidate in its 175-year ...
16-9-2020 at 01:30
by: Heptylene
Vacuum aspirator using DMSO
If you're going through the trouble of building an oil aspirator with liquid pump, tank, etc. then j ...
16-9-2020 at 01:20
by: Heptylene
latest glassware purchase
I finally have a heating mantle and it works like a charm!

14-9-2020 at 11:35
by: Heptylene
Suggestions for high temp oil bath?
Has anyone tried vacuum pump oil? The vapor pressure is low by design:
< 1e-8 atm at room temper ...
12-9-2020 at 02:03
by: Heptylene
Making Scientific Glassware
Glassblowing is on my todo list, it's so incredibly useful to be able to make your own custom glassw ...
30-8-2020 at 11:58
by: Heptylene
Radioactive Minerals
I can recommend [url=]this ebay seller[/url] for geiger counters. ...
29-8-2020 at 07:28
by: Heptylene
Storing Sodium in Aluminum Bottle
Sodium reacts more slowly with ethanol than with water. You can put the sodium pieces in ethanol. An ...
25-8-2020 at 13:24
by: Heptylene
Storing Sodium in Aluminum Bottle
I store my sodium (100 g) in a glass jar with mineral oil. The type of jar with a rubber seal and le ...
25-8-2020 at 10:48
by: Heptylene
Leaking desiccator
Try spraying some coloured water on the dessicator while it's under vacuum. The water will get sucke ...
21-8-2020 at 11:32
by: Heptylene
Vacuum pump connections
Silicone tubing isn't great for vacuum, it tends to collapse in my experience. I can recommend PVC t ...
19-8-2020 at 11:13
by: Heptylene
Lab clear out sale
That's an impressive amount of nitromethane! Do you have a picture of it?
19-8-2020 at 11:08
by: Heptylene
Glassware identification
Nice! First and third one are used to create aerosols. The piece of glassware is connected on top of ...
13-8-2020 at 11:43
by: Heptylene
Run Vacuum Pump with Relay Timer (On 2 Sec Off 60 Sec)?
I'm assuming if your pump is PTFE then it's good quality. PTFE is such an expensive material that I ...
9-8-2020 at 11:30
by: Heptylene
Analytical Equipment Demo
All of them? But if I have to pick one, it's TGA, because I have never used it.
3-8-2020 at 12:58
by: Heptylene
Suggestions for glass joint-grease that won't get stuck after vacuum distillations?
Put more grease? Sometimes if you don't put enough grease, there will be some parts of the joint (to ...
3-8-2020 at 12:55
by: Heptylene
Is there any trick to get stir bars to stay centered and spin on flat bottom flasks?
Get large and strong stirbars, you won't regret the investment. Also, some stirbars have a ridge in ...
26-7-2020 at 03:48
by: Heptylene
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