GSAB – Global Standard Accreditation Board provides independent and impartial accreditation to Chemical Metrology Calibration Laboratories in accordance with ISO/IEC 17025.
Our accreditation process ensures laboratories demonstrate technical competence in chemical measurement calibration, reference material characterization, validated calibration methods, reliable analytical results, and international measurement traceability to SI units.
What Do Chemical Metrology Calibration Laboratories Do?
Chemical metrology calibration laboratories establish traceability and accuracy in chemical measurements by calibrating analytical instruments, preparing and assigning values to reference materials, and validating quantitative measurement systems. They determine:
-Accuracy and bias of analytical measurement systems
-Concentration values of reference standards
-Purity and composition of certified materials
-Measurement uncertainty in chemical analysis
-Traceability to SI units through primary or secondary standards
-Stability and homogeneity of reference materials
-Compliance with regulatory and metrological requirements
These laboratories form the backbone of reliable chemical measurement systems used in regulatory, industrial, environmental, and pharmaceutical sectors.
Industries supported include:
-Pharmaceuticals & Biotechnology
-Environmental Monitoring
-Food & Agriculture
-Petrochemical & Chemical Manufacturing
-Clinical & Toxicology Laboratories
-Government Regulatory Authorities
-Research & National Metrology Institutes
Typical Chemical Metrology Calibration Services Performed
Depending on their scope, laboratories may conduct:
-Calibration of analytical balances (mass traceability for chemical analysis)
-Calibration of volumetric glassware (pipettes, burettes, flasks)
-Preparation and value assignment of reference solutions
-Certified Reference Material (CRM) characterization
-Purity analysis of primary standards
-Calibration of spectrophotometers (UV-Vis, IR)
-Calibration of chromatographic systems (HPLC, GC)
-pH buffer solution characterization and validation
-Conductivity solution calibration
-Titrant standardization and traceability establishment
-Density and refractive index calibration
-Validation of chemical measurement procedures
-Inter-laboratory comparison coordination
GSAB verifies that all chemical measurement methods are scientifically validated, uncertainty budgets are properly established, traceability chains are documented, and reference materials are stable and fit for purpose.
Who Can Apply?
Chemical metrology calibration accreditation is suitable for:
-National metrology institutes
-Reference material producers
-Analytical calibration laboratories
-Pharmaceutical quality control laboratories
-Environmental reference laboratories
-Government regulatory laboratories
-Research institutions and universities
-Contract analytical and calibration service providers
Accreditation Criteria
GSAB accredits chemical metrology calibration laboratories based on: -ISO/IEC 17025 -Applicable ILAC mandatory documents -ISO 17034 (where applicable for reference material producers) -International metrology guidelines -Regulatory and scheme-specific requirements Accreditation confirms: -Competence of technical and metrology personnel -Proper characterization of reference materials -Documented traceability to SI units -Validated calibration and analytical procedures -Comprehensive measurement uncertainty evaluation -Stability and homogeneity testing -Participation in proficiency testing programs -Risk-based management system implementation GSAB operates in accordance with ISO/IEC 17011, ensuring impartiality, transparency, and technical integrity in accreditation decisions.
GSAB follows a structured and technically rigorous accreditation process:
1. Application & Scope Definition
The laboratory submits a detailed calibration scope including analytes, concentration ranges, matrices, measurement methods, and declared Calibration and Measurement Capabilities (CMC).
2. Document Review
Evaluation of:
-Quality Manual
-Method validation and verification records
-Reference material preparation and characterization data
-Measurement uncertainty budgets
-Traceability documentation
-Stability and homogeneity studies
-Proficiency testing participation
-Internal audit and management review records
3. On-Site Assessment
-Witnessing of analytical and calibration activities
-Review of primary standards and traceability chain
-Evaluation of environmental and contamination control
-Assessment of technical competence of personnel
-Verification of equipment qualification and performance checks
4. Corrective Actions & Technical Review
-Review and closure of nonconformities
-Verification of corrective action effectiveness
-Independent technical committee review prior to accreditation decision