SIMS expertise: validating an industrial analytical method in the laboratory

Bringing a product to market, optimizing a process, or resolving a nonconformity requires a reliable analytical method, specific to your matrix and aligned with your objectives. At Expertise sims, the challenge is not limited to producing a result: the method must demonstrate that it is capable of detecting, identifying, or comparing surface chemical species with a controlled level of performance. Analytical method validation makes it possible to provide objective evidence of specificity, precision, accuracy, linearity where relevant, sensitivity, limits of detection and quantification, robustness, stability, and uncertainty. This approach is particularly useful for technical materials, thin films, surface contamination, adhesion defects, process residues, or R&D investigations.

SIMS is particularly relevant when conventional techniques reach their limits on the very first surface layers or at trace levels. It can be used to investigate contamination, compare batches, confirm the presence of a surface treatment, characterize an interface, understand an assembly defect, assess the impact of cleaning, or document process drift. It is of interest to many sectors: medical devices, metallurgy, electronics, energy, chemistry, aerospace, surface treatment, and advanced materials.

The process begins with a technical review of your needs: sample type, analytes or signatures sought, expected sensitivity level, measurement range, time constraints, available quantity, and intended use of the data. The laboratory then defines the implementation parameters: sampling strategy, preparation, instrumental conditions, calibration or reference materials, test plan, and acceptance criteria. A development or pre-validation phase may be carried out before full validation, especially for complex matrices or highly specific needs. If required, broader support can be provided through a Laboratory Technical Audit.

Using an independent laboratory saves time, secures the analytical strategy, and provides an external perspective on the relevance of the method. FILAB supports industrial companies with a project-oriented organization, dedicated human and technical resources, and a recognized quality framework with ISO 17025 accreditation. The goal is not only to produce analysis, but to build a robust, traceable method adapted to your matrix, your process, and your decision-making constraints.

The laboratory supports industrial companies that want to outsource all or part of their analytical management: needs assessment, definition of acceptance criteria, custom method development, pre-validation, full validation, transfer to the receiving site, and performance monitoring over time. This approach is based on an ISO 17025 quality framework and a methodology adapted to the challenges of R&D, process optimization, quality control, and regulatory requirements. To explore the general principles further, see our dedicated page on analytical method validation as well as our content on Analytical Method Validation Assay.

The expertise relies on a combination of analytical skills, suitable sample preparation protocols, and complementary techniques when needed. In addition to SIMS and TOF-SIMS for surface analysis, the laboratory can combine its investigation with other characterization methods such as XPS or SEM to strengthen interpretation. For a complementary approach to imaging and morphology, discover our SEM Analysis Laboratory.

Performance is demonstrated through tests and objective evidence. Depending on the analytical objective, the criteria studied include specificity, repeatability, intermediate precision, accuracy, sensitivity, robustness, stability, limits of detection and quantification, as well as measurement uncertainty. The level of validation is adjusted to the final use of the method: routine control, one-off investigation, regulatory support, or inter-laboratory transfer. For related applications involving cleaning residues, you can also consult our content on ISO 19227 Method Validation.

A validated method must be controlled throughout its lifecycle. The laboratory can support method transfer between the sending laboratory and the receiving laboratory, verify that critical parameters have been properly understood, provide targeted training, and set up performance monitoring. In the event of a change in material, process, specification, or product use, partial or full revalidation may be assessed in order to maintain the method's relevance.

To get started, it is important to define your analytical objective, the nature of the materials or surfaces to be studied, the compounds or elements targeted, the expected performance level, and the context in which the results will be used. The laboratory can then define a suitable action plan: assess feasibility, develop the method, validate performance, transfer the method, and train teams if necessary. Having it validated, securing, documenting, transferring and optimizing your SIMS analytical method helps make your technical and quality decisions more reliable.