You should be able to adjust resistance values for all cups electronically, i.e. via Isodat in Instrument Control.
If the adjustment range offered by Isodat is not sufficient to adapt your IRMS to deal with these samples, I would not run these samples but this purely my personal view.
Sent from my BlackBerry 10 smartphone.
From: Jürgen Kuhn
Sent: Monday, 30 March 2015 11:56
To: [log in to unmask]
Reply To: Stable Isotope Geochemistry
Subject: [ISOGEOCHEM] replacement of resistors and capacitors on single amplifier board for Delta V Advantage
Dear Isogeochem members,
Unfotunately I have to deal with a lot of 13C and 15N highly enriched
samples. I want to change the resistors and capicitors on the single
amplifier board of our Delta V Advantage. Does anyone have experience in
doing so and do you know a good and relyable source for high-impendance
resistors for a reasonable price (Thermo Sweden wants around 2000 €). I
need the combination 1 GOhm/150 pF and 10 GOhm/15 pF.
Dr. Jürgen Kuhn
Department of Biology
Getingevägen 60 B
222 41 Lund
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