Miguel
Yes they are quite fragile (although you can dip the wire in the collodion 
several times to build up the thickness) but they can usually be filled. One 
method to do this is to only slide the capillary half off the wire and then by 
holding the wire you can dip the cellulose end in the powder. Sometimes you can 
also pack the powder in by using another wire as a kind of "ram-rod". 
Then by cutting the wire (but keeping the cellulose still attached) you can 
mount the wire into the goniometer head for your diffractometer.
Mike



Professor A M Glazer
Department of Physics
Parks Road
Oxford
OX1 3PU
United Kingdom
Tel/Fax: 44 1865 272290
******************************************
Professor of Physics
Official Fellow & Tutor of Jesus College Oxford
Crystallographer
Aviator
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-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: 18 November 2007 09:32
To: rietveld_l@ill.fr
Subject: RE: Kapton capillaries

Mike,

I tried to make cellulose capillaries as well, but my product came out to be 
quite fragile. Also, I couldn't find an easy way to fill them. Do you know the 
tricks?

Miguel


On 17 Nov 2007 at 10:12, Michael Glazer wrote:

> 
> There is an old method that I used to use for capillaries that you may 
> useful. Take a metal wire of appropriate diameter and dip it into collodion 
> (nitrocellulose dissolved in acetone), allow it to dry.
> Then stretch the wire with pliers and slip off the cellulose 
> capillary. This is cheap, quick, has very low scatter and of course you can 
> make it to whatever size you want.
> 
> Mike Glazer
> 
> 
> 
> From: Andy Fitch [mailto:[EMAIL PROTECTED]
> Sent: 17 November 2007 07:29
> To: rietveld_l@ill.fr
> Subject: Re: Kapton capillaries
> Goodfellows www.goodfellow.com
> Cole-Parmer http://www.coleparmer.com/
> 
> See also "A rapidly filled capillary mount for both dry powder and 
> polycrystalline slurry samples".
> R. B. Von Dreele. J. Appl. Cryst. (2006). 39 , 124-126
> 
> Andy
> 
> 
> At 19:49 16/11/2007, you wrote:
>     Could someone please suggest a source for purchasing kapton capillaries? 
> A search on 
>     the internet drew a blank.
>     
>     Thanks.
>     
>     Dipo Omotoso
>      
> 
> 

--
Miguel Gregorkiewitz
Dip Scienze della Terra, Università
via Laterina 8, I-53100 Siena, Europe
fon +39'0577'233810 fax 233938
email [EMAIL PROTECTED]




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