Dear list members. I am looking for measured values of ionization efficiencies (ions/molecules) for continuous flow D/H on a delta plus XL. Even if you have an XP I would appreciate your input. Thank you Sean Sylva _____________________ Sean P. Sylva Mail Stop 4 Woods Hole Oceanographic Institution Woods Hole, MA 02543 Office: Fye 116 Ph: 508-289-3546 Fax: 508-457-2164 Email: [log in to unmask]