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motor for fumehood
No offense intended Jor, sorry.
If you convert face velocity to the volume for your area then you ... |
28-4-2008 at 16:00
by: bio2 |
cheap glass beware!
I've noticed that the Kimax boiling flasks made in Mexico are not as good as those from USA or Pyrex ... |
28-4-2008 at 15:44
by: bio2 |
motor for fumehood
There is a very good thread here by Magpie on this subject. There are others as well.
All these q ... |
28-4-2008 at 15:04
by: bio2 |
Cleaning corroded aluminum and/or epoxy
Try the red high temperature silicone.
Works for me and cures faster than RTV. |
18-4-2008 at 07:33
by: bio2 |
Pet Ether from petrol
Heptane boils at 98.4 so the VMP boiling mostly 110-150 must be mostly C8 and higher rather than muc ... |
15-4-2008 at 09:54
by: bio2 |
Pet Ether from petrol
Unleaded gas in USA contains a high percentage of MTBE (methyl tertbutyl ether)
so to get low and/o ... |
14-4-2008 at 18:30
by: bio2 |
Ace Hanovia Photochemical Equipment
The basics of autotransformers.
http://ecmweb.com/mag/electric_basics_autotransformers/ |
13-4-2008 at 08:26
by: bio2 |
Cleaning corroded aluminum and/or epoxy
Ice machine cleaner for descaling Aluminum evaporators is hydoxy acetic acid. |
12-4-2008 at 14:52
by: bio2 |
Acquisition of Conc. H2SO4
Good luck finding a PTFE vessel that will withstand those conditions.
Usually teflon lined steel ... |
12-4-2008 at 14:48
by: bio2 |
Ace Hanovia Photochemical Equipment
No, If you can find a 2:1 transformer rated at least 1/2 the load then wire that as an
auto-transfo ... |
12-4-2008 at 14:26
by: bio2 |
Acquisition of Conc. H2SO4
........ Does anyone know if a substantial amount of water can "backflow" into the receiver? ....... ... |
12-4-2008 at 13:44
by: bio2 |
NaOH solution density
.....You just open the "Chemicals.txt" file (in the program folder) and add a new entry as instructe ... |
8-4-2008 at 18:32
by: bio2 |
Vacuum pump oil
Vacuum pump oil is low vapor pressure high purity
mineral oil with a narrow high boiling range some ... |
30-3-2008 at 18:09
by: bio2 |
NaOH solution density
The solution calculator in this free mole/solution calculator
gives the density to 4 decimal places ... |
30-3-2008 at 17:52
by: bio2 |
Stupid little nalgene aspirators...
Well Evil Lurker, I must say that's the fanciest trap I ever saw.
Sheesh, I use a 1L filter flask ... |
27-3-2008 at 16:24
by: bio2 |
Stupid little nalgene aspirators...
Silicone grease will help the glass to metal seal but I have found that it makes
it so slippery tha ... |
26-3-2008 at 16:14
by: bio2 |
Stupid little nalgene aspirators...
...... One problem I have is rusting of the pump: the water colors itself into orange after a few da ... |
26-3-2008 at 14:23
by: bio2 |
I Have Ethyl Acetate and KI
Alfa/Aesar, Their prices are usually competitive.
Item #A12704
Potassium iodide, 99%
Order S ... |
24-3-2008 at 08:53
by: bio2 |
Gallium in an Al/Hg reduction
The mercury salt must dissolve the adhering Al oxide as well as inhibit reformation.
Metallic Hg ... |
24-3-2008 at 08:48
by: bio2 |
Use a dimmer to control heating mantle
The wave form really doesn't matter for accurate resistive power control just the "chopped" wave can ... |
23-3-2008 at 10:40
by: bio2 |
Californian chemophobia
Magpie got it right when he said.....
They are on the forefront of all social evils, including th ... |
22-3-2008 at 13:01
by: bio2 |
Frozen vacuum dessicator lid...
Speaking of WD-40 which isn't really a good lubricant.
Best way to ruin a fan bearing for example i ... |
22-3-2008 at 12:50
by: bio2 |
DIY Sub Zero C freezer?
Problem with Peltiers, other than those already mentioned, is the capacity for the size and current ... |
22-3-2008 at 12:39
by: bio2 |
Use a dimmer to control heating mantle
@ S.C. Wack
Some time ago I posted a circuit that linearizes and
provides full wave symmetrical ... |
22-3-2008 at 12:12
by: bio2 |
How do you distil a foaming liquid?
Sometimes stirring is not enough to control foaming.
A few drops of Castor oil breaks the foam an ... |
22-3-2008 at 09:40
by: bio2 |
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