I recently bought an isocarb for our SIRA-24 and it's working. In previous
modells they used glass sample buckets. In our they use metal (SS?) ones.
My problem is that the samples (forams) are shaken out of the buckets while
the stepper motor makes it's steps. Powdered samples spill less material
but still enough to cause severe contamination. After a run I can see a
trace of carbonate powder on the bottom plate. Some of it is pushed forward
with each bucket into the acid. I drilled out some conical shaped buckets
to have upstanding sides but even then material was thrown out of them.
Maybe I can mount a smoother walking stepper motor but I don't know if they
Is anyone familiar with the problem and how did you solve it?
Arnold van Dijk
Institute of Earth Scienses, University Utrecht
P.O.Box 80021 Phone : (xx)-31-(0)30-2535004
3508 TA Utrecht Fax : (xx)-31-(0)30-2535030
Nederland E-mail: [log in to unmask]