Luciangamer - 13-12-2007 at 22:56
Where can the capillary tubes like the ones used in lab be purchased? All I found on ebay were things that looked some type of biomedical equipment
not_important - 14-12-2007 at 01:08
try a Web search, find lots of places like
http://www.sciencelab.com/page/S/PVAR/10615/10-2430-34
http://sciencekit.com/product.asp?pn=IG0026111&bhcd2=119...
Luciangamer - 14-12-2007 at 19:01
Thanks, that is exactly what I was looking for
vulture - 15-12-2007 at 11:45
It's pretty easy to make them yourself from glass rods using a MAPP torch for example.
unionised - 16-12-2007 at 05:55
Vulture, how do you dril the hole through a rod?
vulture - 16-12-2007 at 08:47
What? We just order hollow rods with an inner diameter of approx 5mm. They're pretty cheap and make good capillary tubes (with some skill) for vacuum
distillations.
[Edited on 16-12-2007 by vulture]
unionised - 16-12-2007 at 12:10
A rod is solid; a tube has a hole through it.
Ozone - 16-12-2007 at 14:14
I have always used cheap, disposable Pasteur-type pipettes. They are only a few dollars for a large box. Simply rotate over a nice blue flame until an
organge glow is imparted to the flame and the glass begins to sag slightly. Then, firmly, but smoothly pull the ends apart. You should get a very
fine, hollow tube suitable for TLC spotting which can be broken into as many smaller parts as needed. Expect at least 30 spotters per-pipette.
Don't worry when you frag ther first few. They are cheap.
Cheers,
O3
dangator - 24-1-2008 at 23:43
As a follow-up to ozone--you want the -flint glass- pipettes for easy pulling with a typical bunsen burner.