Kratos MS 25, the alternative with magnetism, delivers research-grade performance at a routinesystem price, particularly.... . . .when it comes to large,complex and labile molecules found in involatile biological and other organic samples. The double focussing geometry of the MS 25, together with the unique Hexapole lens system maintains high sensitivity and resolution throughout its 1200 AMU range. Ask for Publication A300-0981 for more details on how other users let FAB solve their problems. Çys-Tyr-Phe-Gin-Asn-Çys-Pro-Arg-Gly-NH2
An example of a negative ion Fast Atom Bombardment Spectrum of the cyclic peptide Vasopressin. Here are some of the benefits: Digital Where It Counts. Manual operation of key functions with data system compatibility for routine analysis. Better Than Unit Mass Resolution. In addition to its GC/MS capabilities, the MS 25 provides mass determination to 0.001 atomic mass units and hence empirical formulae of the complete spectrum even at scan rates as fast as 0.5 seconds. The World's Number One Capillary Gas Chromatograph, Carlo Erba 4161. Interfaced through a separately temperature controlled oven with provisions for jet separator, open split and direct coupling. A Data System that works for you. The Kratos DS 55 data system with the MS 25 has routines for: GC/MS, MS/MS type experiments,and precise mass i assignment at high resolution. I Plus some additional benefits: ACE—CI and El on the same capillary GC peak ™ correlated by the data system. FAB—Large, labile molecules run routinely by operators with little or no MS training. Plus a wide range of options and accessories, and comprehensive applications and user support. Let us tell you more about how the MS 25 excels in sensitivity, resolution and spectrum quality. Write to Kratos Analytical Instruments, 24 Booker Street, Westwood, Ν J 07675, or call (201) 664-5702.
KRATOS
Finally a simple MS for difficult samples.
Analytical Instruments
MS 25 the alternative with magnetism. CIRCLE 119 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 54, NO. 3, MARCH 1982 · 419 A
