To determine whether it can be added, first look at three points: whether the mass analyzer supports external ion injection, whether the sample chamber or transfer zone has an available interface, and whether the software can trigger acquisition and reconstruct the image by pixel. Host instruments such as time-of-flight (TOF), Orbitrap, triple quadrupole and ion mobility can theoretically all be externally connected, but the specifics are subject to the manufacturer compatibility list.
From an engineering view, an external imaging source splits imaging into two parts, ionization localization plus existing analyzer, so users reuse the vacuum and analytical capabilities of their existing mass spectrometer, significantly lowering the total investment. This forms two upgrade paths together with the full-system vacuum MALDI imaging system.
Taking LDPI as an example, laser desorption plus photoionization is completed in an open ambient environment, and ions enter the host analyzer through the interface; DPI uses electrospray plus photoionization, with no polarity bias and sensitivity 1–4 orders of magnitude higher than DESI. Both adapt to existing host instruments externally, avoiding full-system purchase.
The value of modular sources lies in gradual expansion: teams can first validate imaging feasibility on their existing mass spectrometer, then expand throughput or resolution as needed, making procurement and budgeting smoother than buying a new full system.
The key to adaptation lies in ion interface geometry, coordinate synchronization accuracy and the software reconstruction chain. Neo-Source LDPI/DPI offer model-by-model coverage of mainstream host instruments such as Agilent, SCIEX, Thermo; installation should include optical or spray calibration, pixel-trigger delay calibration and standard-sample imaging verification.
After installation, it is recommended to use standard sections with known distribution for repeatability testing, confirming resolution, peak stability and export capability in standard formats such as imzML, before moving to real samples.
First clarify the target molecules and resolution: for low-background small molecules at the single-cell scale, prioritize evaluating LDPI 2–3 μm (among the leading in the industry) matrix-free; for tissue-scale high-sensitivity broad-polarity, look at DPI. Then request adaptation proof for the specific host model and small-sample data from the manufacturer.
Adding a source is not simple splicing; the core is the engineering maturity of the interface and synchronization. It is recommended to conduct paid or free small-sample validation with your own samples and confirm the effect before deciding, rather than relying only on the parameter table.
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).