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Analysis of protium water samples by Saurer

Dear friends,

last November (2005), Georgii brought us a protium
water sample from a new Gatchina production.
I gave it to Matthias Saurer (Laboratory of Atmo-
spheric Chemistry at PSI) to be analyzed by his
new mass spectrograph, together with former water
samples "Isotec" (from Tim) and "Ontario Aug-02"
(from Canada, first batch).

The resulting ratios (c_D/c_H) are:

"Isotec"             -0.40 ppm  (former ana +3.0 ppm)
"OntarioAUG-2002"    -1.94 ppm  (former ana +1.7 ppm)
"Gatchina NOV-2005"  -3.14 ppm

Obviously, the results suffer once again from the long
extrapolation of the standard (144.5 ppm) to near 0 ppm.
According to Saurer, the relative differences are however
more reliable.

Therefore, one may conclude, that the new Gatchina water
sample - in view of previous "absolute" ETH results -
seems to be around

	0.5+-0.5 ppm (or say < 1 ppm),

which would be very suitable for a new, better protium
gas production!

So I have the following questions to Alexei, Sasha and
Georgii:

Does it make sense, that this new water sample has by
an order of magnitude better deuterium-depletion than
all earlier Gatchina samples??

In case of good reasons: is it possible to get this
water to PSI for protium gas production? When would
this be possible?

Please consider these questions!

Thanks and best regards

Claude