Susan,

We have had some experience with crimp tops on
exetainer type vials, in our case we needed quartz
exetainers.  We had them made at

Technical Glass Products Inc.
Painesville OH 44077  USA
440-639-6399

They could make screw cap or serum crimp caps.
We had them make the crimp caps , but the rubber
stopper turned out to be tricky.

TGP had some trouble getting a exactly round hole
in the top, we originally used the Si red rubber stoppers
and crimp tops.  We then tried the grey rubber tops that
come with the exetainers and found them to be superior
in holding vacuum and not leaking once filled with He.

If you need pyrex you should be able to get ACE glass
or any glass supplier to make them for you.  We have
had luck getting Fischer or VWR to order them from
their glass supplier at reduced rates.

Good luck,
Bill

At 03:31 PM 11/7/2002 +0000, you wrote:
>Dear All,
>
>I would be grateful if anyone could reply to me (not the list unless
>interest is expressed in which case I can summarise) if they know of
>a supplier /manufacturer of exetainer type bottles that have a
>crimpable top, rather than a screw-top.
>
>These exetainers are routinely used in our lab in conjunction with AP
>gas prep interface and mass spec for measurements of 18O of water and
>CO2 headspace samples. The dimensions are approx 10ml volume, 101mm
>high by 15.5 mm external ID. I could take a slightly smaller or
>larger volume, but the external ID must be matched quite well if to
>fit into our existing sample tray.
>
>I have  contacted the exetainer supplier (Labco) for advice (but they
>only offer the screwcap), and spent some time on-line searching
>before asking you guys for help, but have had little success, so time
>to put the message out to the experts:-)
>
>Thanks,
>Susan
>--
>*********************************************************
>Dr. Susan Waldron,
>Scottish Universities Research and Reactor Centre,
>Scottish Enterprise Technology Park,
>East Kilbride G75 0QF,
>Scotland.
>
>Tel: (01355) 270142
>Fax: (01355) 229898
>email: [log in to unmask]
>http://www.gla.ac.uk/surrc/personnel/waldrons/
>*********************************************************

William J. Showers
Dept of Marine, Earth & Atm Sciences
Box 8208
North Carolina State University
Raleigh NC 27695

(919) 515 - 7143 Office
(919) 515 - 7802 Fax
(919) 515 - 3689 Lab
(919) 515 - 7911 Field Lab
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