Skip to content
Institute For Oil & Gas Training
OGI-1252 New

Diesel and Gasoline Quality Testing Training Course

Duration
5 days
CPD hours
15
Language
English
Next date
26 Oct 2026
View dates & register Download brochure

We use your details only to answer this enquiry. See our privacy policy.

Overview

The Diesel and Gasoline Quality Testing Training Course by Institute For Oil & Gas Training develops the technical and operational capabilities required to assess diesel and gasoline quality, verify product specifications, identify fuel contamination and maintain consistent fuel performance across oil and gas operations. Designed for professionals responsible for fuel testing, product quality assurance, laboratory analysis, refining, storage and distribution, this course strengthens the processes that protect product integrity and support reliable commercial operations.

Diesel and gasoline are essential refined petroleum products used across transport, industrial operations, power generation and numerous downstream applications. Their commercial value and operational suitability depend on measurable quality characteristics, including density, viscosity, volatility, ignition or combustion performance, sulphur content, distillation behaviour and contamination levels. Inconsistent product quality affects equipment reliability, customer satisfaction, contractual compliance and the reputation of organisations involved in refining, trading, storage and distribution.

The Diesel and Gasoline Quality Testing Training Course addresses the practical challenges associated with evaluating these characteristics, interpreting laboratory results and determining whether products meet applicable specifications. Participants develop a structured understanding of fuel testing methods, recognised industry standards, sampling practices and quality assurance procedures. They learn to connect analytical results with operational requirements and make informed decisions when test results indicate deviations from established acceptance criteria.

Fuel quality management requires more than conducting individual laboratory tests. Reliable results depend on representative sampling, suitable test methods, calibrated instruments, controlled testing conditions and accurate documentation. Poor sampling practices, inadequate equipment maintenance and inconsistent analytical procedures introduce uncertainty into quality assessments. These weaknesses increase the risk of releasing non-conforming products, disputing commercial transactions and overlooking contamination during storage or transportation.

This programme places diesel fuel specifications and gasoline quality requirements within the wider context of petroleum product quality control. Participants examine how product properties influence fuel performance, how different contaminants affect product suitability and how fuel testing standards support consistent evaluation. The programme also explores the relationship between laboratory findings, operational investigations, product release decisions and corrective action.

For organisations operating across refining, terminals, depots, fuel distribution networks and petroleum trading, effective quality testing supports dependable product delivery and stronger process control. A consistent testing approach enables teams to identify abnormal results, investigate quality deviations and communicate technical findings clearly to operational managers, suppliers and customers.

Institute For Oil & Gas Training delivers this programme for professionals who need practical knowledge of diesel and gasoline testing within an industrial environment. The course combines analytical principles with operational case studies, recognised standards and quality management practices. Participants gain a stronger foundation for evaluating petroleum products, improving laboratory discipline and supporting quality decisions throughout the fuel supply chain.

Objectives

  • Explain the principal physical and chemical properties that determine diesel and gasoline quality.

  • Interpret diesel fuel specifications and gasoline quality requirements in relation to intended applications and commercial acceptance criteria.

  • Identify recognised fuel testing standards and select appropriate test methods for relevant product characteristics.

  • Explain representative sampling principles and their influence on the reliability of laboratory results.

  • Recognise common sources of fuel contamination during production, storage, handling, transportation and distribution.

  • Interpret laboratory test results and identify deviations from applicable product specifications.

  • Explain the significance of density, viscosity, flash point, distillation characteristics, sulphur content, cetane number and octane rating.

  • Evaluate the implications of water, sediment, particulate matter and product cross-contamination.

  • Apply systematic approaches to investigating abnormal or inconsistent test results.

  • Strengthen documentation, traceability and reporting practices within fuel quality control operations.

  • Explain the role of calibration, quality control samples and repeatability checks in maintaining dependable analytical results.

  • Support product acceptance, rejection, quarantine and retesting decisions through documented evidence.

  • Recommend corrective actions that address identified quality deviations and reduce the risk of recurrence.

  • Improve communication between laboratory, operations, storage, distribution and commercial teams.

  • Contribute to consistent fuel performance, improved product integrity and stronger quality management across the petroleum supply chain.

Training methodology

The Diesel and Gasoline Quality Testing Training Course uses a practical, industry-focused delivery approach that connects fuel testing principles with the demands of petroleum production, refining, storage and distribution. Institute For Oil & Gas Training combines technical presentations, guided discussions, case studies, group exercises and simulated quality investigations to develop skills that participants can apply in their professional responsibilities.

Technical Presentations and Guided Discussions

Structured presentations introduce the physical and chemical properties that determine diesel and gasoline quality. Participants examine the significance of density, viscosity, distillation characteristics, flash point, sulphur content, octane rating, cetane number and other relevant parameters. Discussions connect these measurements to product specifications, equipment requirements, customer expectations and operational controls.

Laboratory Testing Principles

Participants review the principles behind recognised fuel test methods and examine how laboratory equipment, testing conditions and sample preparation influence analytical results. Exercises demonstrate the importance of instrument calibration, method selection, repeatability, accuracy and traceable records. The approach builds an understanding of laboratory quality without implying that classroom participation replaces supervised practical authorisation for specialist equipment.

Case Studies and Quality Investigations

Industry-based scenarios explore common fuel quality problems, including water contamination, sediment, cross-contamination between products, unexpected test results and deviations from contractual specifications. Participants evaluate sample information, compare laboratory results with acceptance criteria and identify appropriate investigative steps.

These exercises develop a systematic approach to determining whether a result represents a genuine product deviation, a sampling problem or a potential testing error. Participants also consider the commercial and operational consequences of releasing products without adequate verification.

Group Exercises and Technical Reporting

Group activities focus on interpreting test data, documenting findings and communicating quality concerns. Participants work through sample reports, identify incomplete records and develop recommendations for further testing or corrective action. These exercises strengthen cooperation between laboratory personnel, operations teams, quality managers and commercial departments.

Simulated Product Release Decisions

Participants review scenarios involving product acceptance, rejection, quarantine, retesting and escalation. They apply relevant diesel fuel specifications and gasoline quality criteria to determine the appropriate response to non-conforming results. The exercises emphasise evidence-based decisions, documented procedures and clear communication with responsible personnel.

Application to Workplace Operations

Throughout the programme, participants relate the learning material to their organisational procedures and responsibilities. Discussions address laboratory quality assurance, sampling plans, product segregation, storage controls and the investigation of recurring quality issues. This approach supports the transfer of technical knowledge into practical workplace improvements.

Organisational impact

Improved Product Quality Assurance

Organisations benefit from a more systematic approach to verifying diesel and gasoline quality. Participants develop the capability to interpret test results against applicable specifications and identify potential deviations before products progress to subsequent stages of the supply chain. Consistent verification strengthens product release controls and reduces the likelihood of distributing fuel that fails established acceptance requirements.

Reduced Risk of Fuel Contamination

Fuel contamination creates operational, commercial and equipment-related risks. Water, sediment, particulates and unintended mixing between petroleum products affect product suitability and can lead to customer complaints, equipment problems and costly investigations. The course strengthens awareness of contamination pathways and reinforces the importance of sampling, storage segregation, transfer controls and timely investigation.

More Reliable Laboratory Results

Reliable product decisions depend on dependable analytical data. Improved understanding of test methods, sample handling, calibration and laboratory quality control helps organisations identify weaknesses that affect measurement reliability. Better testing discipline supports consistent results, strengthens confidence in laboratory reports and provides a clearer basis for operational decisions.

Stronger Specification Compliance

Petroleum products are assessed against applicable national specifications, international standards, contractual requirements and customer-defined acceptance criteria. Participants learn to distinguish between a measured result and the relevant acceptance requirement, supporting more consistent product conformity assessments. This capability improves the quality of technical documentation and helps organisations prepare for internal reviews, customer assessments and applicable external inspections.

Improved Operational Efficiency

Unclear results, repeated testing and poorly documented investigations consume laboratory and operational resources. A structured approach to sampling, testing and result interpretation helps teams identify the likely causes of discrepancies and determine the appropriate next steps. More effective investigations reduce avoidable delays and support smoother product release and distribution processes.

Better Commercial Decision-Making

Product quality directly influences commercial acceptance, delivery obligations and disputes between suppliers and customers. A clear understanding of specifications and analytical evidence helps technical and commercial teams evaluate claims, assess product conformity and communicate findings with greater precision. Consistent records also improve the traceability of decisions concerning product acceptance and rejection.

Stronger Equipment Protection and Fuel Performance

Fuel that fails relevant quality requirements can contribute to operational difficulties and unsuitable combustion characteristics. Understanding the relationship between fuel properties and intended applications helps organisations recognise quality conditions that require further assessment. Better control of fuel quality supports equipment protection, reliable operation and appropriate product selection.

More Effective Cross-Functional Coordination

Fuel quality responsibilities frequently span laboratories, refineries, terminals, procurement, logistics and distribution. The course establishes a shared technical understanding of testing results and quality terminology. This improves communication between departments and helps ensure that quality deviations receive appropriate investigation, escalation and resolution.

Better Corrective Action and Continuous Improvement

Organisations need to address both individual quality failures and the underlying conditions that cause repeated deviations. Participants learn to distinguish immediate containment measures from longer-term corrective actions. This supports more effective root cause investigations, clearer accountability and continuous improvement in fuel handling and testing procedures.

Personal impact

Stronger Technical Understanding

Participants develop a practical understanding of the characteristics that determine diesel and gasoline quality. They learn how key fuel properties relate to product specifications, testing procedures and operational suitability. This foundation supports more confident engagement with laboratory reports and product quality discussions.

Improved Test Result Interpretation

The course strengthens the ability to review analytical data, recognise unusual values and compare results with applicable acceptance criteria. Participants gain a clearer understanding of the limitations of individual tests and the importance of considering sample integrity, testing conditions and method requirements before reaching conclusions.

Greater Contamination Awareness

Participants improve their ability to recognise contamination risks associated with product storage, transportation, handling and transfer operations. This knowledge supports earlier identification of potential quality problems and more effective communication with colleagues responsible for investigating and resolving them.

Better Problem-Solving Capability

Practical scenarios develop a structured approach to quality deviations. Participants learn to examine available evidence, consider possible causes, identify the need for additional testing and recommend suitable next steps. These skills support sound technical judgement without relying on assumptions or incomplete laboratory information.

Improved Reporting and Communication

Accurate reporting is essential when test results affect product release, customer acceptance or commercial decisions. Participants strengthen their ability to document findings, explain deviations and present technical information in a clear, evidence-based manner. These capabilities support more effective cooperation with laboratory supervisors, quality managers and operational leadership.

Increased Confidence in Quality Control Responsibilities

A stronger understanding of recognised standards, testing procedures and quality assurance principles enables participants to approach their responsibilities with greater confidence. They become better equipped to participate in product inspections, laboratory reviews, contamination investigations and discussions concerning product conformity.

Professional Development

The knowledge gained supports continued development in petroleum laboratory operations, fuel quality assurance, product inspection, refining support and downstream quality management. Participants also gain a stronger foundation for taking on responsibilities that require coordination between testing functions and operational teams.

Who should attend

  • Laboratory Technicians and Analysts: Strengthen their understanding of fuel testing methods, sample preparation, analytical results and laboratory quality control.

  • Laboratory Supervisors: Improve oversight of testing procedures, instrument reliability, reporting practices and result verification.

  • Quality Control Engineers: Develop stronger capabilities in product conformity assessment, contamination investigation and corrective action.

  • Quality Assurance Managers: Improve the coordination of quality procedures, documentation, acceptance criteria and continuous improvement activities.

  • Refinery Process Engineers: Understand how refining operations influence diesel and gasoline properties and finished product quality.

  • Refinery Operations Supervisors: Strengthen their ability to recognise quality deviations and coordinate appropriate operational responses.

  • Petroleum Product Inspectors: Improve their understanding of sampling, specification verification and the interpretation of inspection and laboratory findings.

  • Fuel Terminal and Depot Managers: Strengthen product segregation, storage quality controls and procedures for investigating contamination.

  • Fuel Storage and Distribution Supervisors: Improve awareness of handling-related quality risks and the importance of representative sampling.

  • Oil and Gas Quality Managers: Develop a broader understanding of technical testing requirements and their relationship with organisational quality objectives.

  • Petroleum Product Traders and Supply Specialists: Improve their understanding of product specifications, quality certificates and commercial acceptance requirements.

  • Procurement and Contract Management Professionals: Strengthen their ability to interpret technical quality requirements within purchasing agreements and product supply contracts.

  • Technical Services Engineers: Improve their ability to connect fuel characteristics with product suitability and operational performance.

  • HSE and Operational Risk Professionals: Understand contamination-related operational concerns and the importance of controlled handling and documented quality decisions.

  • Downstream Operations Managers: Improve coordination between product testing, operational planning, product release and customer delivery.

  • Early-Career Petroleum Professionals: Build a practical foundation for roles involving fuel testing, quality assurance, inspection and petroleum product management.

Course outline

This module introduces the principal characteristics that determine the quality, suitability and commercial acceptability of diesel and gasoline. Participants examine the relationship between fuel composition, refining processes, finished product properties and intended applications across the petroleum supply chain.

The module establishes a technical foundation for understanding product specifications and the purpose of individual quality tests. Participants explore how density, viscosity, volatility, distillation behaviour, ignition quality and combustion-related properties influence fuel handling, storage and performance.

  1. ASTM D4057

    • Standard overview: ASTM D4057 establishes manual sampling practices for petroleum and petroleum products, supporting the collection of samples intended to represent the material being evaluated.

    • Industry relevance: Representative sampling provides the foundation for reliable diesel and gasoline quality assessments.

    • Operational application: Participants examine how sampling location, equipment, containers and handling procedures affect the suitability of samples for testing.

    • Quality assurance focus: Proper sample identification, preservation and traceability help reduce errors associated with unrepresentative or compromised samples.

    Learning Outcomes

    • Explain the principal characteristics used to evaluate diesel and gasoline quality.

    • Distinguish between key fuel properties and their operational significance.

    • Describe the relationship between refining processes and finished product characteristics.

    • Explain why representative sampling is essential for reliable quality assessment.

    • Identify the information required to assess product suitability against applicable specifications.

    • Recognise the importance of sample integrity and traceability throughout the testing process.

This module examines the principal quality parameters used to assess diesel fuel and their relevance to product acceptance, handling and operational performance. Participants explore the relationship between measured properties, contractual requirements and recognised testing methods.

The module focuses on density, viscosity, flash point, sulphur content, cetane number, distillation characteristics and other parameters specified for the relevant diesel grade. Participants consider the selection of suitable test methods and the interpretation of results within the context of applicable product requirements.

  1. EN 590

    • Standard overview: EN 590 specifies requirements and test methods for automotive diesel fuel within its applicable European market context.

    • Industry relevance: The standard provides a recognised reference for assessing automotive diesel characteristics and determining conformity with applicable requirements.

    • Testing application: Participants examine how diesel properties are evaluated against the relevant specification limits using appropriate test methods.

    • Operational consideration: Product grades, applicable editions and local market requirements must be verified before using the standard as an acceptance basis.

    Learning Outcomes

    • Identify important parameters used to assess diesel fuel quality.

    • Explain the significance of density, viscosity, flash point and sulphur content.

    • Describe the relevance of cetane number and distillation characteristics to diesel performance.

    • Interpret diesel test results against applicable product specifications.

    • Explain the importance of selecting the correct test method for each parameter.

    • Identify potential causes of non-conformity in diesel fuel.

    • Recommend appropriate follow-up testing or investigation when results fall outside acceptance criteria.

This module focuses on the properties that determine gasoline quality, suitability and performance in spark-ignition engines. Participants examine the significance of octane rating, volatility, distillation characteristics, vapour pressure, sulphur content and other parameters relevant to the applicable gasoline grade.

The module also explores the relationship between product composition, refining and blending practices, storage conditions and final product quality. Participants learn to assess analytical results against relevant requirements and understand why gasoline specifications differ according to market, grade and intended application.

  1. ASTM D2699

    • Standard overview: ASTM D2699 defines the research octane number test method for determining the knock characteristics of spark-ignition engine fuels under specified test conditions.

    • Industry relevance: Research octane number is a key gasoline quality parameter associated with resistance to engine knock.

    • Testing application: Participants examine the purpose of octane rating and how the result contributes to gasoline quality assessment.

    • Interpretation requirement: Octane results must be considered alongside the applicable product specification and other relevant fuel characteristics.

    Learning Outcomes

    • Explain the principal properties used to evaluate gasoline quality.

    • Describe the significance of research octane number and its relationship to engine knock resistance.

    • Identify the roles of volatility and distillation characteristics in gasoline assessment.

    • Explain how product composition and blending influence gasoline properties.

    • Interpret gasoline quality results against relevant specifications.

    • Recognise the importance of selecting test methods appropriate to the parameter being assessed.

    • Identify potential quality deviations that require further investigation or corrective action.

This module examines the causes, indicators and consequences of fuel contamination across refining, storage, transfer and distribution operations. Participants investigate common contamination sources, including water, particulate matter, sediment and unintended mixing between different products.

The module also considers the controls needed to maintain dependable laboratory results. Participants explore sample handling, equipment calibration, testing consistency, quality control checks, documentation and result verification. Emphasis is placed on distinguishing actual product contamination from errors introduced by sampling or analytical procedures.

  1. ISO/IEC 17025

    • Standard overview: ISO/IEC 17025 establishes general requirements for the competence, impartiality and consistent operation of testing and calibration laboratories.

    • Industry relevance: The standard provides a recognised framework for laboratory management, technical competence and the reliability of testing activities.

    • Quality assurance application: Participants examine the role of documented procedures, equipment control, method suitability and technical records in dependable testing.

    • Result integrity: The standard supports the consistent evaluation of testing processes and the traceability of analytical findings.

    Learning Outcomes

    • Identify common sources of diesel and gasoline contamination.

    • Explain the effects of water, sediment, particulates and product cross-contamination on fuel quality.

    • Recognise sampling and handling practices that compromise sample integrity.

    • Explain the purpose of equipment calibration and laboratory quality control procedures.

    • Describe the importance of repeatability, method suitability and reliable technical records.

    • Distinguish potential product quality failures from possible sampling or testing errors.

    • Recommend appropriate containment, retesting and investigation measures for suspected contamination.

    • Identify opportunities to strengthen laboratory procedures and quality assurance practices.

This module brings together the technical and operational principles covered throughout the course. Participants examine how laboratories and operational teams use test results, product specifications and quality records to support product release, rejection, quarantine and further investigation.

The module focuses on evidence-based decision-making, technical reporting, non-conformity management and corrective action. Participants work through realistic scenarios involving specification deviations, disputed results, incomplete records and potential contamination. They develop a structured approach to identifying the issue, evaluating evidence, documenting decisions and recommending measures that reduce the likelihood of recurrence.

  1. ASTM D3244

    • Standard overview: ASTM D3244 provides a recognised practice for using test data to determine conformity with specifications for petroleum products and related materials.

    • Industry relevance: The practice supports the evaluation of analytical results when determining whether a petroleum product meets specified requirements.

    • Decision-making application: Participants examine the importance of considering test precision, applicable specification limits and relevant decision procedures when assessing conformity.

    • Commercial relevance: Consistent interpretation of test data supports documented product acceptance decisions and the technical evaluation of quality disputes.

    Learning Outcomes

    • Compare laboratory findings with relevant diesel and gasoline acceptance requirements.

    • Explain the principles of specification conformity assessment.

    • Identify when additional testing or technical review is necessary.

    • Distinguish product rejection, quarantine, retesting and release decisions.

    • Prepare clear and traceable records of quality deviations and investigation findings.

    • Recommend corrective actions that address identified causes of non-conformity.

    • Explain how consistent quality reporting supports customer communication and commercial decisions.

    • Develop practical recommendations for improving product testing, contamination prevention and quality assurance procedures.

Certificate

Upon successful completion of the Diesel and Gasoline Quality Testing Training Course, attendees receive a Certificate of Completion from Institute For Oil & Gas Training.

The certificate recognises participation in the training programme and completion of its learning requirements. Attendees must satisfy the institute's attendance requirement and participate in the required course activities to qualify for the certificate.

The Certificate of Completion confirms course participation. It does not represent an independent professional licence, laboratory accreditation or external certification unless separately specified by the relevant issuing authority.

Course dates

  • Europe

    Middle East

    Asia

    Africa

    North America

    Online

    Fee: £3,800

  • Europe

    Middle East

    Asia

    Africa

    North America

    Online

    Fee: £3,800

  • Europe

    Middle East

    Asia

    Africa

    North America

    Online

    Fee: £3,800

  • Europe

    Middle East

    Asia

    Africa

    North America

    Online

    Fee: £3,800

Fees include tuition, course materials and refreshments. Need different dates or a different city? Ask about your preferred date.

Frequently asked questions

What does the Diesel and Gasoline Quality Testing Training Course cover?

The course covers diesel fuel specifications, gasoline quality parameters, recognised fuel testing standards, representative sampling, laboratory quality assurance, fuel contamination and the interpretation of test results. It also addresses product conformity assessment, technical reporting and corrective action.

Who should attend this fuel quality testing course?

The programme is suitable for laboratory technicians, fuel analysts, quality control engineers, laboratory supervisors, refinery professionals, petroleum product inspectors, terminal managers, quality assurance specialists and downstream operations personnel. It also benefits procurement and commercial professionals who work with petroleum product specifications and quality documentation.

How is the course delivered?

Institute For Oil & Gas Training uses an industry-focused methodology combining technical presentations, case studies, guided discussions, group exercises and simulated quality investigations. Participants examine realistic fuel testing scenarios and practise interpreting results against relevant product requirements.

Which standards are covered during the training?

The course introduces relevant recognised standards, including ASTM D4057 for manual petroleum sampling, EN 590 for automotive diesel requirements, ASTM D2699 for research octane number testing, ISO/IEC 17025 for testing and calibration laboratory competence, and ASTM D3244 for evaluating test data against specifications. The applicable edition and market requirements must be confirmed for each operational application.

Will participants receive a certificate after completing the course?

Yes. Attendees receive a Certificate of Completion from Institute For Oil & Gas Training after completing the course requirements and satisfying the institute's attendance requirement. The certificate confirms participation and completion of the training programme rather than independent professional licensing or laboratory accreditation.

Next: 26 Oct 2026

4 dates available

Register Now

Related training courses

Get the training calendar in your inbox

New courses, dates and industry insight. No more than twice a month.