For one redacted uncertainty-budget workbook, I return a PDF prepared for your technical manager's review. It documents the file, independently checks the calculations the service supports, and states exactly what still requires laboratory review.
For my first ten customers, the first workbook is free. The founding offer lets you judge the actual record. There is no obligation to order additional work.
View a complete sample validation record
Your laboratory relies on an Excel workbook for an uncertainty budget, but the evidence around that workbook is incomplete, scattered or stale. You may know that it calculates. The harder questions are whether its requirements are written down, whether expected results were derived independently, which sheets were actually tested, and what remains unestablished.
The deliverable is that evidence record. It is not a certificate and it is not a claim that the entire workbook passed.
The record is structured around the NIST GLP 15 Software Verification and Validation form. All 47 checks appear. Thirty are designed to use file evidence, but the number answered depends on the workbook. Checks requiring procedures, passwords or human judgment remain assigned to the laboratory.
The PDF puts the conclusion first and the evidence behind it:
A machine-readable results CSV accompanies the PDF so the evidence can be stored, compared and reverified later.
You make a working copy of the workbook. Remove customer identifiers and unrelated results, but keep every numeric input used by a formula, along with the formulas, labels and workbook structure. We agree on transfer and retention in writing, you send the copy and the relevant scope, and I confirm within one business day whether the file is readable. The record comes back within ten business days, as a PDF with a results CSV. From there the requirements, the metrology judgment and the authorization decision stay with your laboratory.
Workbook analysis stays local and workbook content is not sent to AI tools, cloud analysis services or outside contractors. New technical cases are reproduced in synthetic workbooks without customer content. I can review your NDA first, and deletion can be confirmed in writing after the agreed retention period.
The arithmetic engine currently recognizes row-based uncertainty budgets and linear calibration calculations. Other workbook conventions still receive file, formula, integrity, protection and NIST coverage checks, but no arithmetic pass when the calculation was not evaluated.
| Item | Price (USD) |
|---|---|
| First workbook, for my first ten customers | Free |
| First workbook after the founding offer | $750 |
| Each additional workbook in the same engagement | $250 |
| Annual reverification, per workbook | $150 |
| Ten-workbook annual reverification package | $1,200 |
I started this service in 2026. No record I have produced has yet been through an accreditation assessment. The first file is free so you can judge whether your technical manager would sign the result. There is no obligation to order additional work. The offer is limited to the first ten customers.
Les échanges peuvent se faire entièrement en français. Consultez la page française pour les modalités, les consignes de caviardage et l'accès au dossier exemple, actuellement en anglais.
Email Félix about a workbook. Do not send the file until we have agreed on redaction,
transfer and retention.
felix@desrochersvalidation.com