>>Hi Jason,
>>
>>I also had to source a supply of the PCTFE 
>>disks and silicone rubber septa after realizing 
>>that the only reasonable option is make them 
>>yourself.
>>
>>I use the same PCTFE sheets that Kim described 
>>but I also buy rolls of 1/8" red silicone 
>>rubber which I cut into 12" x 12" sheets. I lay 
>>the PCTFE onto a sheet of rubber, stack up ~20 
>>sheets and take them to an company here in 
>>Calgary that specializes in rubber and septa 
>>and stuff and they punch them out together 
>>(~300 per sheet). When I get them back the 
>>PCTFE disks and rubber septa are often loosely 
>>stacked together, making it slightly easier to 
>>stuff them into the caps.
>>
>>It takes a bit of testing to get the exact 
>>die-punch needed for your vial (something the 
>>company did for me) but the cost per cap is now 
>>at least in the reasonable price range ~$CND 
>>0.60.
>>
>>Cheers,
>>Steve
>>


Hi, Steve,

Which one is the advantage of other vials over 
the Exetainers? Cost certainly not. My latest 
order of round-bottomed vials from Labco  was 
about 0.30 USD (approximate, considering currency 
variations) for the whole vial, including cap.

If my figures are right, just the septa costs you 
about 0.50 USD, so what am I missing?

Cheers,

Clemente


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*******************************************
Dr. Clemente Recio
Laboratorio de Isótopos Estables
Fac. de Ciencias
Univ. de Salamanca
Plaza de la Merced, S/N
E-37008 SALAMANCA
               SPAIN

Phone: (+34) 923 29 45 00, Ext. 1540 (Automatic Switchboard)
Fax:     (+34) 923 29 45 14
E-mail: [log in to unmask]
Web page: http://www.usal.es/isotopos
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