Alison,
   I have used national scientific company 100 ul insert with a polyspring without problem. part number c4012-530

Erik D Pollock
Manager - University of Arkansas Stable Isotope Lab
632 Science and Engineering Hall
Fayetteville, AR 72701
479-575-4506
http://www.uark.edu/ua/isotope/index.php

----- Original Message -----
From: Alison Sloat <[log in to unmask]>
Date: Tuesday, December 1, 2009 2:14 am
Subject: [ISOGEOCHEM] Vial inserts
To: [log in to unmask]

> I'm running water samples for D and O using 2-mL vials in our GC PAL
> autosampler. Because some of my samples are smaller than 2mL, I
> would like
> to use inserts to avoid headspace. After searching the archives
> here, I
> found the Sigma-Aldrich website, but I'm not sure which insert is
> best. What
> are the benefits/reasons for an insert with a bottom spring or a
> polyflange?Could someone please offer any advice, suppliers, and/or
> product numbers?
>
> Thank you!
>
> Alison Sloat
>