ISO 17025 Quality Standards
The Perfect SOP Template for Testing & Calibration Labs
A simple, structured standard operating procedure format built specifically for testing and calibration labs.
- Compliant: Covers key ISO 17025 sections and quality parameters.
- Efficient: Easy for lab analysts to read, follow, and execute.
- Customizable: Easily editable to fit your lab’s specific workflows and SOP formatting.

The 11 Key SOP Components
This structure includes every essential section for a clear, standardized, and compliant document.
Definitions & Abbreviations
📌 Standardize terms and acronyms to ensure clarity.
List technical terms with definitions. Include industry-specific abbreviations (e.g., HPLC – High-Performance Liquid Chromatography). If none, state: “No definitions required for this SOP.”
References
📌 Cite relevant regulations, guidelines, or internal documents.
Include direct links to ISO standards, FDA guidelines, and internal policies.
Example:
USP <61> Microbial Limits Testing
Responsibility
📌 Define who is responsible for executing and overseeing the SOP.
Identify key roles (Lab Technicians, Quality Control Manager, Supervisor). Specify who is responsible for performing, reviewing, and approving the procedure.
Training Requirements
📌 Ensure personnel are properly trained before execution.
List mandatory training, certifications, or internal courses.
Example:
New employees must complete Lab Safety Training before handling chemicals.
Safety Requirements
📌 Minimize risk by outlining protective measures.
List Personal Protective Equipment (PPE): Gloves, lab coat, safety goggles. Highlight hazards and emergency protocols.
Example:
If exposed to reagent X, rinse with water for 15 minutes and notify a supervisor.
Equipment
📌 Define all required instruments and tools.
List all necessary lab equipment.
Example:
Analytical balance (±0.1mg accuracy)
Pipettes (10µL–1000µL)
pH meter (calibrated daily)
Materials & Reagents
📌 List all consumables, chemicals, and reagents used.
Include chemical names, concentrations, and storage conditions.
Example:
Ethanol (95%) – Store at room temperature
pH Buffer Solution (pH 4.00) – Store at 4°C
Records
📌 Track all SOP execution activities and maintain compliance.
List forms, software, and logbooks where results are recorded.
Example:
1. Instrument Calibration Log
2. LIMS (Laboratory Information Management System)
Procedure
📌 Provide a step-by-step breakdown of the process.
Use simple, direct language with numbered steps.
Example:
Step 1: Sample Preparation
Weigh 1.000g of the sample using an analytical balance. Transfer to a clean 50mL volumetric flask.
Step 2: Measurement
Set up the HPLC according to SOP-TECH-003. Inject 10µL of the sample solution.
Monitoring
📌 Define who verifies, validates, and trains for this SOP.
List authorized personnel for audits and training.
Example:
Lab Supervisor: Reviews and approves execution.
Quality Control Manager: Conducts periodic audits.
Corrective Actions
📌 Establish a process for handling deviations.
Define common errors and corrective steps.
Example:
Incorrect sample weight? Repeat weighing and document deviation.
Instrument failure? Notify lab manager and log the issue in maintenance records.
SOP Compliance FAQs
Frequently Asked Questions
Questions about writing and managing SOPs for compliance.
How to write SOP for ISO?
How to write SOP for ISO?
1. Define the Scope & Purpose: Before writing, clearly define what the document covers and its objectives.
2. Keep Procedures Clear & Concise: Use simple, direct language and action verbs.
3. Use a Structured Format: Break the document into logical sections (Responsibility, Materials, Procedure, etc.).
4. Audit & Improve: Periodically review, gather feedback, and update version controls to keep files accurate and audit-ready.
What is the standard SOP format?
What is the standard SOP format?
A Standard Operating Procedure (SOP) format is typically structured with clear metadata (Title, Document ID, Version, Effective Date), sections for Purpose, Scope, Responsibilities, Materials/Equipment, and a step-by-step numbered Procedure. For compliance, it should also include training requirements, document controls, and revision histories.
What is SOP in ISO 9001?
What is SOP in ISO 9001?
In ISO 9001, a Standard Operating Procedure (SOP) is a documented procedure that describes how to perform routine operations to ensure consistency, quality, and compliance with the organization’s quality management system (QMS). It serves as a tool to minimize variability and prevent quality deviations.
What is the ISO standard for SOP?
What is the ISO standard for SOP?
There is no single ISO standard solely for SOPs. Instead, quality standards like ISO 17025 (Section 7.2) and ISO 9001 require organizations to control their documents and records, establish documented procedures for testing and calibration methods, and demonstrate that personnel are following current, approved revisions.
How do I write a basic SOP?
How do I write a basic SOP?
You can start with our free template. Then follow these steps:
- Determine the goal and scope of the SOP.
- Identify the key stakeholders and end-users.
- Gather the procedural details from experienced lab operators.
- Draft the document using clear, actionable steps.
- Route it for review and quality approval.
- Train your team on the approved revision.
What are ISO standards for procedures?
What are ISO standards for procedures?
ISO standards require documented procedures for critical activities to ensure quality control. For example, under ISO 9001 and ISO 17025, you must implement documented procedures for:
- Control of Documents
- Control of Records
- Internal Audits
- Handling of Nonconforming Work
- Corrective Actions (CAPA)
- Training & Competency
