Meaning
Technical documentation established at the foundation of laboratory quality systems formalizes competence in mechanical and thermal testing of materials. Demonstrating compliance through ISO 17025 certification confirms that an analytical testing facility operates an audited quality management system capable of producing valid polymer datasheets. The scope of this accreditation applies to specific test methods listed in the lab scope, including melt flow index and tensile modulus.
Accreditation does not guarantee material purity or product performance, establishing competence solely for the evaluated testing methods. Accredited laboratories undergo regular external audits to maintain technical scope and measurement traceability.
Method Validation
Rigorous equipment calibration and equipment verification protocols ensure that instruments generate repeatable mechanical data. Polymer testing facilities operating under ISO 17025 certification validate custom rheological protocols before generating certified datasheets for resin suppliers. Calibration curves for capillary rheometers maintain trace accuracy against national measurement standards.
Daily verification checks catch instrument drift in load cells before bad tensile data enters material specifications.
Data Integrity
Unbiased reporting of test results prevents resin suppliers from publishing selective property values on commercial datasheets. Certified testing reports record sample preparation conditions and injection molding parameter settings. Regrind blending levels in test specimens are documented alongside virgin resin baselines to prevent misleading toughness claims.
Commercial buyers demand testing reports from accredited facilities during resin qualification to verify compliance with automotive specifications.
Accreditation Scope
Laboratory accreditations apply exclusively to explicitly named standards and test methods within the facility portfolio. Non-accredited testing performed inside a certified lab lacks regulatory recognition for automotive and medical plastic parts. Expanding an accreditation scope requires third-party auditing of new equipment and operator proficiency.
Facility audits evaluate quality manual documentation, internal proficiency testing results, and corrective action logs every two years.
