2026 Best Fire Assay Labs for Global Buyers

Evaluation criterion	Suggested weight	What to evaluate	Evidence to request
Accreditation and method scope	20%	Confirm that the laboratory’s ISO/IEC 17025 accreditation covers the relevant fire assay method, analyte, and sample matrix. Accreditation applies to a defined scope, so verify the actual scope rather than relying on a general claim.	Current accreditation certificate, detailed scope, and the method reference used for the requested analysis.
Method fit and sample mass	15%	Check that the proposed charge mass, preparation procedure, and assay finish suit the material and expected concentration. Gold and platinum-group-element programs can require different procedures and finishes.	Written method description, minimum sample quantity, preparation steps, and confirmation of analytes and finish methods offered.
Quality control and result reliability	15%	Assess how the laboratory monitors analytical performance. Routine controls may include blanks, certified reference materials, duplicates, and documented review of out-of-control results.	Sample report showing quality-control results, control acceptance rules, and the laboratory’s process for investigating failures.
Detection limits and reporting range	10%	Ensure the stated reporting limits and upper range meet the project’s needs. Limits depend on the method, sample mass, instrument finish, and matrix; compare like-for-like methods and units.	Method-specific detection or reporting limits, units, expected precision near the decision threshold, and any over-range procedure.
Sample preparation and custody	10%	Review how samples are received, identified, dried, crushed, pulverized, split, and stored. Clear custody and preparation records help reduce mix-ups and support traceability.	Sample submission instructions, tracking process, preparation specification, retention policy, and procedures for damaged or discrepant shipments.
Turnaround and capacity	10%	Compare quoted turnaround with the project schedule and confirm how it is measured. Workload, sample preparation, repeat assays, and shipping can affect delivery time.	Current standard and rush-service estimates, the start point for turnaround, capacity for the expected batch size, and delay notification process.
Reporting and data handling	8%	Check that reports clearly identify samples, methods, units, results, and relevant qualifications. Confirm that digital data formats and revision controls work for the buyer’s workflow.	Redacted sample report, available file formats, correction and revision policy, and data access or confidentiality terms.
International logistics and compliance	7%	For cross-border submissions, verify that the laboratory can explain packaging, shipping documentation, customs responsibilities, and restrictions relevant to the sample type and destination.	Written shipping guide, required sample declarations, receiving address and hours, and allocation of customs and freight responsibilities.
Safety and environmental controls	5%	Fire assay uses high-temperature processes and may involve hazardous materials. Evaluate documented worker-safety, furnace, ventilation, and waste-management controls appropriate to the laboratory’s operations.	Relevant safety and environmental policies, incident-management process, and confirmation of applicable permits or operating controls.
Total suggested weight	100%	Score each criterion using the same evidence standard across all laboratories being compared.