Paul, We analyse and then seal them back up in 1 ml glass
ampules.
We do as Ty Coplen recommends and calibrate two larger water
standards but it is still nice to break open an ampule every six
months for a quick check.
Bob

On 2 Jan 01, at 16:17, Paul Brooks wrote:

Date sent:              Tue, 2 Jan 2001 16:17:37 -0800
Send reply to:          Stable Isotope Geochemistry <[log in to unmask]>
From:                   Paul Brooks <[log in to unmask]>
Subject:                Re: storage of IAEA water standards
To:                     [log in to unmask]

MS users,

We are just about to crack open our IAEA water standards and
wondered if
anyone has any recommendations as to how to store them once
they are open.
  I assume that a small glass bottle with screw polyethylene cap
would be
fine.  If anyone has any experience storing these standards please
let me
know.

Thanks in advance,

Paul.




Paul D. Brooks,
Dept. ESPM-ES,
147 Higard Hall MC 3110,
UC Berkeley, Ca. 94720-3110.

phone (510)643-1748,
FAX (510)643-5098.

Robert J. Drimmie                  [log in to unmask]
Environmental Isotope Laboratory   Telephone: 519-888-4567
Department of Earth Sciences       Extension: 2580
University of Waterloo             Facsimile: 519-746-0183
Waterloo, Ontario, Canada N2L 3G1  http://sciborg.uwaterloo.ca/research_groups/eilab