We have some small (50 microlitre) samples that we would like to analyse
for D/H by Gasbench with platinum rod equilibration. Does anyone have any
experience with this, for example using smaller exetainers? I'm worried
about drying the sample whilst filling with the hydrogen-helium mix. If
there is no good way of doing this, we may be best off diluting to 200ul
with water of a known isotopic composition and accepting that the
measurements will be less accurate.