Hi All,
	I am rapidly running out of septa for my Multiprep vials and need to 
find a new supplier.  Typically I only use the Multiprep for oxygen 
isotopic analysis of waters.  I have only used red rubber septa with 
kel-f disks that I got from Matt Emmons of Mountain Mass Spec.  Matt 
seems to be out of the business as he does not answer calls or emails.  
So I need a new source.

I need these for Wheaton vials (wheaton number 986284, 1 ml, 13mmX44mm, 
screw cap size 13-425), not exetainers.

I have made my own using a 12mm arch punch and 0.125 inch (3mm) 
material but would rather just be able to buy them.  Does anyone have a 
source of this type of septa?

If I have to go the complete custom route does anyone have suggestion 
as to septa material (silicone, butyl, red rubber, viton) and inert 
disk (PTFE) or not?  Does the advice change any for hydrogen isotopes 
on water?

Thanks in advance for any advice.  Jason

Jason Curtis, Ph.D.
Stable Isotope Mass Spec Lab manager
Associate-In Geochemistry
Department of Geological Sciences
241 Williamson Hall
University of Florida
Gainesville, FL 32611
[log in to unmask], office 352-392-2296
lab 352-392-3344, fax 352-392-9294