High Sensitivity GC/MS with High Mass FAR JMS-DX300 ΕΙ/CI Double Focusing GC/MS • 25,000 resolution • Mass range to 3000 amu • Fast Atom Bombardment, Field Desorption, Field Ionization and Desorption Chemical Ionization • Multiple inlet capillary/packed column micro processor controlled GC • PDP-11/RSX-11M multi-tasking, multi-user, multi-instrument data system Computerized Selected Ion Monitoring El sensitivity of 50 picograms methyl stéarate injected with S/N > 10:1 for m/z = 298.3 J" | • Short ion path and three dimensional focusing for matchless sensitivity and resolution • High reliability, low downtime with continuous production • More than 300 units in use worldwide • Wide dynamic range For more information contact us a t . . . JEOL (USA) Inc. Analytical Instruments Division 235 Birchwood Avenue Cranford, Ν J 07016 (201)272-8820
C H H ~CH, . 3 CH ! C H 3 CH2 ^ S j ^ j ^ - K H CH,
1329 (M + H-CN) +
N H C O( M ^ W f c H . W 2 CH2
\ti
A-H
CONH, ΗΝί^φΛΚπΡΗ;, φ-™> CHCH2
0
Nj^mC0NH2
"A^-H^H
> n - P - 0 . HOI
H
Vitamin B12 C65HB8CoN140MP
Ml
| FAB spectrum of vitamin B12
JEOL
Serving Advanced CIRCLE
Technology
112 O N READER SERVICE C A R D