Clemente and others:

Wheaton makes a conical-shaped vial (they call them V-vials) that has
a volume of 1.0 mL, an O.D. of 13 mm, and uses a 13-425 screw cap
with a hole in the center that can be lined with silicone rubber
septa and Kel-F liners.  Wheaton's part number is 986284 and can be
found through Fisher, VWR, etc., or probably directly through
Wheaton.  You should make sure that the vials will fit in the holes
of the heated rack of the MultiPrep or MultiFlow attached to the
Gilson 222 XL autosampler before you buy a big batch of them.  The
heated rack that was installed with our MultiPrep in 1996 had holes
that could accomodate Wheaton vials that were actually being made
with an O.D. very slightly smaller than 13 mm at that time.  Shortly
thereafter Wheaton's vials "returned" to their nominal O.D. of 13 mm
and no longer fit in our rack.  Fortunately, we purchased quite a few
of the smaller-diameter vials but they are starting to wear out.  The
alternative would be to have the holes of our heated rack bored out
very slightly, and eventually, we may have to resort to this remedy.

Hope this helps!

Steve


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