Dear all, Has anybody tried a magnetic shield between two Isoprimes or other mass spectrometers to avoid interference during magnet hysteresis? Is this possible at all or is it best to place instruments as far apart as possible? Best regards, Melanie -- Dipl.-Ing. (FH) Melanie Behrens Alfred Wegener Institute Helmholtz Center for Polar and Marine Research Glaciology P.O. Box 12 0161 Am Alten Hafen 26 27515 Bremerhaven 27568 Bremerhaven Germany Tel.: +49-471-4831-1396 Lab.: +49-471-4831-1026 Fax: +49-471-4831-1926