Hi Paul,

We use glass tubes with PTFE lined screw caps for these purposes.  HDPE
is porous and does not seal as well to glass when refrigerated (I assume
that 4'C is your intended storage temp).  Good luck--IE

Paul Brooks wrote:
>
> 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.

--
Irene Ellis
Mass Spectrometry Lab
U.S.D.A. Human Nutrition Research Center at Tufts University
711 Washington St.
Boston, MA  02111

(617)556-3182 (LAB)
(617)556-3164 (NEW NUMBER)