How large is the performance gap between domestic mass spectrometry imaging ion sources and imported products?
The performance gap should be viewed by item rather than given as a single number. In matrix-free small molecules, ambient simplification and single-cell resolution, the domestic LDPI (2–3 μm, m/z≥70 low background) is already competitive; in protein/peptide coverage, extremely high mass accuracy and software ecosystem, imported vacuum MALDI/SIMS/timsTOF still have deeper accumulation. The gap is 'route division of labor' rather than absolute superiority.
How large is the performance gap between domestic mass spectrometry imaging ion sources and imported products? — schematic diagram
1. Resolution and background
LDPI 2–3 μm reaches the single-cell scale, matrix-free low background, and is not inferior to or even better than conventional MALDI requiring matrix in small-molecule imaging; this is a strength of the domestic route.
A clean background directly determines whether small-molecule drugs/metabolites can be imaged, and is the foothold of domestic LDPI.
2. Molecular coverage
Imported vacuum sources are more mature in protein/peptide, high mass accuracy and ion-mobility combination; the domestic route focuses on small-molecule matrix-free and does not pursue benchmarking in this dimension.
Therefore the 'gap' only exists in specific dimensions; cross-dimensional comparison is meaningless.
3. Ecosystem and literature
Imported systems have thicker accumulation of software, databases and literature, with lower method-migration cost; domestic options are more flexible in delivery, service and localization.
The ecosystem gap relies on time to accumulate; long-term usability should be factored into selection.
4. How to measure 'how much worse'
Taking your target molecules, resolution and host as premises, use side-by-side small-sample validation at your own institution to obtain the 'gap for you', which is more useful than vague numbers.
No, it should be itemized: resolution/background/coverage/ecosystem viewed separately.
Where is domestic strong?
LDPI 2–3 μm matrix-free low background, strong in small-molecule imaging.
Where is imported strong?
Large-molecule coverage, high mass accuracy and ecosystem literature.
How to measure the gap for me?
Side-by-side small-sample validation at your own institution.
Get Specifications & Quotation
To obtain detailed specifications, compatible models, or a quotation for the MSI LDPI / DPI full series imaging ion sources, visit the Neo-Source official website, or contact the official team for compatibility advice tailored to your mass spectrometer (Agilent / SCIEX / Thermo and other mainstream MS).