Hello Does anybody know where we can obtain 22 gauge stainless steel capillary tubing for the Keil device acid droppers? Thermo are charging 355 quid ($US533.00) each for these which I think is a bit steep. We think the problem with the ISODAT software stopping during runs has been resolved by Thermo changing the scripts, thank you Chris. This has now been released under service pack 1.44 and the dual inlet bellows calibration now should be OK under service pack 1.43. Regards John Hill Mass Spectrometry Facility University College London Chemistry Department 20 Gordon St. London WC1H 0AJ Tel: 020 7679 4605 Fax: 020 7679 7451 Mobile: 07956 924058