Folks,

I am trying to react carbonates using a GV Multiflow (Basically same Idea
as GasBench as far as I can tell in that the H3PO4 reaction occurs in a
helium environment and not a vacuum. So both camps are free to answer), and
I noticed that after the H3PO4 was dispensed there was a tiny bubble at the
bottom of my sample vial. This is obviously not a good thing. Has anyone
experienced similar issues with continuous flow carbonate analysis? Is this
one advantage the running with a vacuum system such as the GV multiprep?

I am using 1ml Wheaton vials that have a cone-shaped bottom and the H3PO4
has a sg. of 1.94. What bottom-shaped vials are people using with the
GasBench or Multiflow? Maybe thats the problem. Reaction temp=90°C

Thanks in advance,
Toti.



Toti Larson Ph.D.
Los Alamos National Laboratory
Earth and Environmental Sciences                505.667.9894 (lab)
Los Alamos, New Mexico 87545            550.667.8006 (office)