Dear Collegues, We are looking for a manual of the Balzers QMS 420 mass spectrometer, which consists of the QMG 420, QMA and QME 125. Especially, we hope somebody has the schematics of the electronics. Our QMS broke down and because it is such an old one, it is hard to get support from the company. Hopefully, somebody can help us. Thanking you in advance, Irene Groot Irene M.N. Groot, PhD. student Leiden University Gorlaeus Laboratoria Einsteinweg 55 2333 CC Leiden The Netherlands Tel. + 31-71-5274452 Fax + 31-71-5274451 To join or leave the molecular-dynamics-news email list, go to: http://www.jiscmail.ac.uk/lists/molecular-dynamics-news.html