When a food analysis laboratory decides to seek accreditation under ISO/IEC 17025:2017, the first question that arises in the management committee is inevitable: how much is this going to cost? The answer is not a single figure but a range that depends on very specific variables. This article breaks down the factors that drive the price, provides indicative ranges based on the Spanish market in 2025-2026, and explains what a consultancy project for accreditation of a food-sector laboratory includes — and what it does not.
What is ISO/IEC 17025 and why does a food laboratory need it
ISO/IEC 17025:2017 is the international standard that establishes the requirements for the technical competence and management of testing and calibration laboratories. For a laboratory that analyses raw materials, finished products, process water or residues in the food industry, accreditation under this standard is not merely a quality badge: in many cases it is an unavoidable commercial or legal requirement.
In Spain, the national accreditation body is ENAC (Entidad Nacional de Acreditación), attached to the Ministry of Industry. ENAC is the body recognised under Regulation (EC) No 765/2008 to issue accreditations valid throughout the European Union via the multilateral agreements of EA (European co-operation for Accreditation). Obtaining ENAC accreditation under ISO 17025 is the standard route in the Spanish market.
The specific reasons why a food laboratory seeks this accreditation are varied: industrial clients that require it as a supplier qualification criterion, contracts with organised retail that include it in their specifications, compliance with Regulation (EU) 2017/625 on official controls in the food chain (which repealed Regulation EC 882/2004, applicable from December 2019), or the need for analytical results to carry evidential weight before the Competent Authority. Accreditation is also a differentiating commercial argument against non-accredited laboratories.
ISO 17025 consultancy price ranges in Spain (2025-2026)
The table below shows indicative ranges in the Spanish market for the implementation consultancy service (from the diagnosis through to the ENAC concession audit), excluding ENAC's own fees and any equipment or staffing costs of the laboratory:
| Laboratory profile | Accredited methods | Consultancy range (€ excl. VAT) | Estimated duration |
|---|---|---|---|
| In-house laboratory of a food SME (<5 technicians) | 5-10 physicochemical and microbiological methods | 8,000 – 15,000 € | 10-14 months |
| Medium-sized independent laboratory (5-15 technicians) | 15-30 methods (physicochemical, micro, allergens) | 15,000 – 28,000 € | 12-18 months |
| Reference laboratory or network of laboratories | +30 methods, multiple food matrices | 28,000 – 55,000 € | 18-24 months |
| Laboratory already accredited to ISO 9001 or GLP | Conversion or scope extension | 5,000 – 12,000 € | 6-10 months |
Reference sources for the ranges: publications of the Ibero-American Forum of ENAC, budgeting guides from the Spanish Association for Standardisation (UNE) and project proposals known in the sector. The ranges are indicative; the actual fee depends on the scope and the starting condition of the laboratory.
On top of the consultancy fees, ENAC's own fees must be added: in 2025 these stand — according to ENAC's published tariffs — between 2,500 € and 7,000 € for the initial evaluation of a food laboratory, plus the cost of evaluating technicians charged per day (approximately 400-650 €/day). ENAC fees are not controlled by the consultant: they are set directly by the body.
Factors that determine the final cost
1. Number and complexity of the methods in the scope
Each analytical method entering the accreditation scope requires documentary validation or verification, measurement uncertainty calculation, metrological traceability, and records of the chain of standards or reference materials. A laboratory wishing to accredit 8 microbiology methods plus 12 physicochemical methods plus allergen detection accumulates a far greater documentary and technical workload than one accrediting only moisture, fat and protein methods. The number of methods is the primary cost driver.
2. State of the management system at the starting point
If the laboratory already has a quality management system in place under ISO 9001, it has structured documentation, record control and internal audits. In that case, the consultancy can focus on the specific technical requirements of ISO 17025 (validation, uncertainty, traceability, competence of evaluating staff) without having to build the foundation from scratch. If the laboratory starts from zero — with no formal system at all — the project must also include setting up the organisational base, which increases both the cost and the timeline.
3. Type of tests: physicochemical versus microbiological
Microbiological methods involve greater complexity in demonstrating technical competence: participation in interlaboratory proficiency testing, control charts, comparison with CEN or ISO reference methods, management of reference strains and analysis of growth records. All of this adds consultancy hours and may require the laboratory to subscribe to recognised proficiency testing programmes (FEPALE, LGC, BIPEA, ENAC-PT…), at an additional cost of 200-800 € per scheme and round.
4. Geographic location and working model
The consultancy can be delivered in a face-to-face, hybrid or fully remote format. On-site work remains the most effective for activities such as verifying the temperature control system, reviewing critical equipment maintenance (autoclaves, balances, pipettes, incubation ovens) or practical training of technical staff. Consultant travel to laboratories outside the provinces where the consultancy has offices can increase the project cost by 10-20 %, or may be partially absorbed through remote working.
5. Need for specialist technical training of staff
ISO 17025 requires staff performing tests to demonstrate documented competence. If technicians have not received specific training in measurement uncertainty calculation (GUM Guide or Eurachem/CITAC CG4), metrological traceability, use of certified reference materials or participation in proficiency testing, the consultancy must include these training sessions. Training a team of 4-8 technicians adds between 1,500 € and 4,000 € to the project.
6. Number of sites or locations
Some food groups have internal laboratories at several production facilities. If all of them are to be included in the scope of a single accreditation, internal audit work, equipment review and training multiply accordingly. The additional cost for each extra site typically ranges between 3,000 € and 8,000 € depending on size.
What a well-structured ISO 17025 consultancy project includes
A quality ISO 17025 consultancy is not just «help preparing the paperwork». The real work covers several distinct phases:
- Initial diagnosis (gap analysis): comparison between the laboratory's actual situation and the requirements of ISO 17025. It identifies documentary, technical and organisational gaps and allows a realistic estimate of project effort before committing the full budget.
- Design and implementation of the management system: drafting or adaptation of the laboratory manual, test procedures, management procedures, technical instructions, forms and records required by the standard.
- Method validation and verification: definition of the validation/verification plan for each method in the scope, support in executing the studies (linearity, repeatability, reproducibility, limit of detection, limit of quantification) and measurement uncertainty calculation.
- Metrological traceability: review of the calibration chain for critical equipment, identification of traceability break points and annual calibration plan.
- Interlaboratory proficiency testing: selection of appropriate programmes according to the matrices and analytes in the scope, monitoring of participation and analysis of the z-scores obtained.
- Internal audit: conducting a full internal audit prior to the ENAC evaluation, with a non-conformity report and follow-up of closures.
- Support during the ENAC evaluation: preparation of the formal application, review of documentation submitted to the evaluating body, support during the visit of ENAC technicians and management of detected deviations.
Additional costs not to overlook in the overall budget
The consultant's fee is only one part of the total project budget. The laboratory manager must also factor in:
- ENAC accreditation fees: application fee + evaluation days + annual maintenance fee.
- Certified reference materials (CRM): essential for metrological traceability and method verification. Price varies by analyte and matrix, typically between 80 € and 400 € per material.
- External calibration of critical equipment: balances, pipettes, thermometers, pH meters, spectrophotometers. If calibration was not up to date, this can amount to between 2,000 € and 8,000 € depending on the equipment inventory.
- Proficiency testing participation: 200-800 € per round and scheme, typically 2-4 rounds before the evaluation.
- Internal staff time: the project requires real commitment from laboratory technicians, not just the quality manager. Estimate between 20 and 60 hours per technician over the course of the project.
Typical timescales to accreditation
In the Spanish market, the average time from the start of consultancy to obtaining ENAC accreditation ranges between 12 and 18 months for a laboratory starting from scratch. This timeline breaks down approximately as follows:
- Diagnosis and planning: 1-2 months.
- System implementation and method validation: 6-10 months.
- Internal audit and closure of non-conformities: 1-2 months.
- Application to ENAC, documentary evaluation and laboratory visit: 3-5 months (ENAC timescales depend on their workload and the complexity of the scope).
Laboratories that already have a prior management system in place, or that are only looking to extend the scope of an existing accreditation, may complete the process in 6-10 months. Working with a consultancy specialising in ISO 17025 that is familiar with ENAC's specific criteria for the food sector significantly reduces the deviations detected during evaluation and avoids extra remediation rounds that would lengthen the project.
What distinguishes a food laboratory from other sectors in ISO 17025 accreditation
Food-sector laboratories present technical particularities that the consultant must know in depth:
- Great diversity of matrices: water, solid foods, food-contact packaging, surfaces, clean-room air, process wastewater.
- Standardised microbiological methods (ISO 6887, ISO 4833, ISO 11290, ISO 16649, EN ISO 6579…) with specific competence demonstration requirements.
- Physicochemical methods for nutrients, additives, contaminants (heavy metals, mycotoxins, pesticide residues, polycyclic aromatic hydrocarbons) requiring higher-cost analytical techniques (ICP-MS, HPLC-MS/MS, GC-MS).
- Allergen detection (ELISA, PCR, mass spectrometry): methods evolving rapidly in terms of regulatory requirements, with specific ENAC guidance documents.
- Food traceability linked to Regulation (EC) No 178/2002: the laboratory must be able to demonstrate sample integrity from reception through to the report.
Frequently asked questions
Does Summum Calidad certify the laboratory or only provide support?
Summum Calidad is a consultancy, not an accreditation body. We support the laboratory throughout the entire implementation process and prepare the application to ENAC, which is the sole body competent to issue ISO 17025 accreditation in Spain. The accreditation is granted by ENAC; we ensure the laboratory arrives at the evaluation in the best possible condition.
What is the difference between accreditation and certification in a laboratory?
Accreditation (ISO 17025, issued by ENAC) demonstrates technical competence to carry out specific tests: it involves the evaluation of the laboratory's actual ability to produce valid results. Certification (such as ISO 9001, issued by a certification body such as AENOR, BV or SGS) demonstrates that the organisation's management system complies with a standard. For testing laboratories whose results need to carry technical and legal weight, accreditation is the relevant requirement; ISO 9001 certification is complementary but not equivalent.
Can an in-house laboratory of a food company be accredited, or only independent laboratories?
Yes. ENAC accredits both independent laboratories and in-house laboratories of industrial companies. The condition is that the laboratory meets the requirements of ISO 17025 regardless of whether it offers its services to third parties or only to its parent company. For an in-house laboratory, accreditation adds rigour and credibility in client audits, inspections by the Competent Authority and product certifications.
How long does ENAC take to issue the accreditation once the application has been submitted?
ENAC timescales vary according to the body's workload and the complexity of the scope. In general terms, between the submission of the formal application and the evaluation visit, 3 to 6 months elapse. If the evaluation is satisfactory and no significant deviations are detected, the decision may arrive within a further 1-2 months. Deviations requiring remediation extend the timeline. It is common for the entire process from application to decision to last between 5 and 9 months.