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questions on platinized asbestos
Silica wool will work better than glass wool as a catalyst support. Glass will soften at the operati ...
17-11-2019 at 01:53
by: Heptylene
pet ether/n-hexane from gasoline/petrol
[rquote=625769&tid=154310&author=Schmiddy]
where I live you need a company license to buy a ...
10-11-2019 at 05:11
by: Heptylene
DIY black light
You can get UV LEDs for several cents on ebay. Typically there are models from that produce 365 to 4 ...
9-11-2019 at 13:50
by: Heptylene
How do you do research for organic procedures?
Finding the correct workup procedure is not easy, and one way to learn is by reading experimental se ...
30-10-2019 at 13:16
by: Heptylene
Distilled, De-ionised or Tap water?
It depends on your tap water. I know mine contains a lot of calcium salts. Just heating the water to ...
25-10-2019 at 12:50
by: Heptylene
Sizing Rashig rings for Hempel column
Thank you all for your advice and experience. Any thread hijacking was welcome Praxichys! Clearly a ...
22-10-2019 at 13:18
by: Heptylene
Where to get cheap TLC plates?
I've seen them on ebay in large sizes (200x200 mm). At uni we cut those large sizes into smaller one ...
20-10-2019 at 12:28
by: Heptylene
Sizing Rashig rings for Hempel column
I'm want to get a new column for some upcoming distillations. The column will also double as a packe ...
20-10-2019 at 10:17
by: Heptylene
Cleaning a florence flask
Put table sald inside the flask and shake it around. Salt is soft and won't scratch the glass but wi ...
17-10-2019 at 10:33
by: Heptylene
Mass and Weight
Interesting videos! Any chance you might investigate whether skin oil changes then result? I handle ...
15-10-2019 at 12:08
by: Heptylene
"Horworka" distillation link
By breather channel do you mean an opening at the top of the condenser? This is definitely planned, ...
6-10-2019 at 10:45
by: Heptylene
Improvised column head
So I've thought about this a bit more. What this distillation link is lacking is a thermometer inlet ...
6-10-2019 at 04:51
by: Heptylene
"Horworka" distillation link
I'll keep looking on ebay for distillation heads, though I'd like it in 29/32 (or 29/42) which is an ...
30-9-2019 at 12:12
by: Heptylene
"Horworka" distillation link
Has anyone ever seen a piece of glassware like this? A distilling link according to Horworka, whoeve ...
29-9-2019 at 06:16
by: Heptylene
presentation about explosives to school
Yeah demonstrations with actual explosives are probably not a good idea.

Explosives are still an ...
8-9-2019 at 06:00
by: Heptylene
How to accurately determine NH3 concentration?
[rquote=613421&tid=150389&author=Ubya][rquote=613409&tid=150389&author=Sulaiman]Disp ...
7-9-2019 at 07:10
by: Heptylene
Weird Question about KMnO4
Maybe KMnO4 is completely insoluble in DCM? I have a hunch it's poorly soluble at best. Maybe you we ...
5-8-2019 at 11:33
by: Heptylene
Building a Ionization Chamber
Your questions is pretty vague. It's like me saying "I want to build a mass spectrometer and I need ...
4-8-2019 at 03:19
by: Heptylene
99.5-100.5% Pure!
[rquote=619547&tid=152727&author=wg48temp9][rquote=619513&tid=152727&author=Heptylen ...
3-8-2019 at 02:10
by: Heptylene
99.5-100.5% Pure!
I found a nice reference book on uncertainties: [url=https://www.eurachem.org/index.php/publications ...
2-8-2019 at 12:41
by: Heptylene
Chemical Removal of Copper from Graphite Gouging Rods
1M H2SO4 + some H2O2 should work very well.
CuCl2/HCl should work well too, but might leave some Cu ...
2-8-2019 at 04:47
by: Heptylene
What is phosgene/phosphine?
[rquote=619309&tid=152659&author=fusso]I can't believe someone with >400 posts would ask ...
31-7-2019 at 09:40
by: Heptylene
What dimmer to use with Glas-Col heating mantle in Europe
For my tube furnace with a similar power output I'm using one of those ebay dimmers, supposedly rate ...
4-7-2019 at 00:39
by: Heptylene
How accurate are solution density measurements?
@brubei: Your approach only takes into account the random error right?

As you said you would also ...
21-6-2019 at 02:21
by: Heptylene
How accurate are solution density measurements?
The density \(\rho\) of a sample is calculated from its mass \(m \pm \delta m\) and volume \(V \pm \ ...
20-6-2019 at 06:02
by: Heptylene
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