NABL accreditation reporting update NABL Certificate Number and ULR Changes 2026: What Calibration Labs Need to Update Updated: 13 September 2026 Short answer: NABL issued a sequence of 2026 announcements affecting how accredited conformity assessment bodies identify their accreditation and reports. NABL announced a change connected with the NABL symbol on 12 June 2026, published a clarification on ULR based on the new certificate-number format on 15 June, and posted a separate announcement on the new accreditation certificate-number format on 6 July. Calibration laboratories should review certificate templates, report templates, LIMS or calibration software, controlled documents, accreditation claims and customer-verification workflows before continuing to rely on older numbering conventions. Accreditation identifiers often look like a small administrative detail until they are embedded in hundreds of reports, labels, procedures, software fields a...