Page 4 - Shimadzu MALDI-7090

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Hyper-MS ™ – a new stan
combining core technologies pat

ASDF™ – unparalleled

MALDI TOF-TOF
ion resolution

ASDF – Axial Spatial Distribution Focussing is a patented
Shimadzu technology that enables unparalleled resolution
in MS/MS mode. Through correction of the axial spatial
distribution of the ions generated, mass resolution is
significantly increased and becomes essentially
independent of the laser power and sample topography. High- and low-energy
With ASDF, the MALDI-7090 can achieve mass resolution
in MS/MS of 10 000 FWHM – unobtainable through fragmentation
pulsed extraction alone.
MS/MS fragmentation in the MALDI-7090 is true high-energy
CID (HE-CID).
The ions enter the CID cell with full 20 keV extraction energy.
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Furthermore, collisions with helium rather than heavier gases
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PPPPPPPPPPPPPPR (air or argon) result in the most efficient generation of ions
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only associated with HE-CID (e.g. side chain fragmentation).
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%Intensity 60 50 w a12 y 12 -2 MS/MS fragmentation is further enriched by retaining all of
the metastable decay ions through the reflectron analyzer,
40 maximizing the amount of information extracted from each
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sample.
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All of these features provide the MALDI-7090 with the
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0 highest possible efficiency for metastable and high-energy
1190 1200 1210 1220 1230 1240 1250 1260 1270 1280 1290 1300
m/z
CID generation and detection.
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