
COSHH Course
This COSHH course gives workers and safety managers the practical knowledge to handle hazardous substances legally and safely. You'll learn to assess chemical risks, read safety data sheets, select the right controls, and respond to incidents with confidence. Stay compliant, protect your team, and meet your legal duties from day one.
What you will learn:
This course covers everything you need to manage hazardous substances in the workplace. You'll learn the legal duties of employers and employees under COSHH regulations, how to identify and categorize hazardous chemicals, dusts, fumes, and biological agents, and how to conduct a thorough, site-specific risk assessment. You'll gain hands-on knowledge of the hierarchy of control measures, PPE selection and maintenance, and exposure monitoring programs. The course also covers emergency response procedures, incident investigation, and how to build and audit a COSHH management system that holds up to regulatory scrutiny.
How you study in a practical way COSHH Course
How you practice COSHH Course
For companies who want to train their team
With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.
Course content
8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)
Chapter 1HideHide detailsSee detailsFoundations of COSHH Compliance
Foundations of COSHH Compliance
Lesson 1 • Types of Hazardous Substances
Categorizes chemicals, biological agents, dusts, and fumes covered by COSHH. Enables learners to identify regulated substances in their own workplace.
Lesson 2 • Legal Duties of Employers and Employees
Outlines statutory obligations for both employers and workers under hazardous substance law. Clarifies accountability at every organizational level.
Lesson 3 • Routes of Exposure and Health Effects
Explains inhalation, skin absorption, ingestion, and injection as exposure pathways. Links each route to specific acute and chronic health outcomes.
Lesson 4 • What COSHH Means and Why It Matters
Defines COSHH, its regulatory purpose, and the harm it prevents. Grounds all subsequent learning in the real-world consequences of non-compliance.
Lesson 5 • Workplace Sectors and Common Hazards
Maps typical hazardous substances to industries such as healthcare, construction, and manufacturing. Helps learners contextualize COSHH within their own sector.
Chapter 2HideHide detailsSee detailsReading and Interpreting Safety Data Sheets
Reading and Interpreting Safety Data Sheets
Lesson 1 • Hazard Statements and Pictograms
Decodes standardized hazard statements, precautionary statements, and GHS pictograms. Connects symbolic warnings to practical handling decisions.
Lesson 2 • Applying SDS Data to Daily Work
Translates SDS information into storage, handling, and disposal decisions. Bridges document literacy with practical workplace behavior.
Lesson 3 • Structure of a Safety Data Sheet
Introduces the standardized 16-section SDS format and the purpose of each section. Provides the map learners need to navigate any SDS efficiently.
Lesson 4 • First Aid and Emergency Information
Locates and interprets first aid measures and spill response data within an SDS. Prepares learners to act correctly in the first minutes of an incident.
Lesson 5 • Exposure Limits and Threshold Values
Explains workplace exposure limits, short-term limits, and biological limit values found in SDS. Teaches learners to compare measured exposure against permitted levels.
Chapter 3HideHide detailsSee detailsConducting a COSHH Risk Assessment
Conducting a COSHH Risk Assessment
Lesson 1 • Assessing Likelihood and Severity of Harm
Applies risk-rating matrices to estimate the probability and consequence of exposure events. Teaches learners to prioritize substances requiring urgent control.
Lesson 2 • Gathering Substance Inventory Data
Covers methods for compiling a complete inventory of substances used, stored, and generated on site. Accurate inventories are the foundation of every valid assessment.
Lesson 3 • Identifying Vulnerable Groups
Highlights workers with heightened susceptibility, including pregnant workers, young persons, and those with pre-existing conditions. Ensures assessments reflect the full workforce.
Lesson 4 • The Five-Step Risk Assessment Process
Introduces the identify–evaluate–control–record–review cycle as the backbone of COSHH assessment. Establishes a repeatable methodology for any workplace task.
Lesson 5 • Documenting and Communicating Findings
Guides learners through recording assessment outcomes in a clear, auditable format. Covers how to share findings with workers and management effectively.
Chapter 4HideHide detailsSee detailsThe Hierarchy of Control Measures
The Hierarchy of Control Measures
Lesson 1 • Elimination and Substitution
Covers removing a hazardous substance entirely or replacing it with a safer alternative. Establishes these as the most effective and preferred control options.
Lesson 2 • Personal Protective Equipment Selection
Guides selection of appropriate PPE types based on substance hazard and exposure route. Reinforces PPE as the last line of defense, not the primary control.
Lesson 3 • Engineering Controls
Explains enclosure, local exhaust ventilation (LEV), and isolation as physical barriers to exposure. Covers selection, installation, and performance expectations for each type.
Lesson 4 • Administrative Controls
Addresses safe systems of work, job rotation, permit-to-work systems, and training as organizational controls. Clarifies that administrative measures supplement, not replace, engineering controls.
Lesson 5 • Combining Controls Effectively
Demonstrates how multiple control levels work together to achieve adequate protection. Teaches learners to build layered control strategies for complex tasks.
Chapter 5HideHide detailsSee detailsPersonal Protective Equipment in Practice
Personal Protective Equipment in Practice
Lesson 1 • PPE Regulatory Requirements
Outlines employer obligations to provide, maintain, and replace PPE at no cost to workers. Establishes the legal baseline before addressing practical application.
Lesson 2 • Donning and Doffing Procedures
Teaches the correct sequence for putting on and removing PPE to prevent self-contamination. Errors during doffing are a leading cause of exposure incidents.
Lesson 3 • Inspection, Maintenance, and Storage
Covers pre-use inspection checks, cleaning protocols, and correct storage conditions for all PPE types. Poorly maintained PPE provides false assurance of protection.
Lesson 4 • Overcoming PPE Non-Compliance
Addresses behavioral and ergonomic barriers to consistent PPE use and strategies to overcome them. Sustainable compliance requires understanding why workers avoid PPE.
Lesson 5 • Fit Testing and Face-Fit Checks
Explains qualitative and quantitative fit-testing methods for tight-fitting respirators. Correct fit is essential for respiratory protection to perform as rated.
Chapter 6HideHide detailsSee detailsMonitoring Exposure and Health Surveillance
Monitoring Exposure and Health Surveillance
Lesson 1 • Sampling Methods and Equipment
Introduces common air sampling techniques including passive badges, active pumps, and direct-reading instruments. Matching method to substance type ensures valid data.
Lesson 2 • Record-Keeping and Trend Analysis
Establishes retention periods for monitoring and surveillance records and methods for spotting exposure trends. Long-term data enables proactive rather than reactive risk management.
Lesson 3 • Health Surveillance Requirements
Defines when health surveillance is legally required and what it must include for specific hazard groups. Links surveillance outcomes to control measure review.
Lesson 4 • Principles of Exposure Monitoring
Explains why and when workplace air monitoring is required and what it can and cannot confirm. Establishes monitoring as a verification tool, not a substitute for controls.
Lesson 5 • Biological Monitoring Programs
Covers urine, blood, and exhaled air sampling to measure internal dose of absorbed substances. Biological monitoring detects exposure that air sampling may miss.
Chapter 7HideHide detailsSee detailsEmergency Procedures and Incident Response
Emergency Procedures and Incident Response
Lesson 1 • Incident Investigation and Root Cause Analysis
Introduces structured investigation methods to identify immediate causes and underlying system failures. Investigation findings must feed directly into control measure improvements.
Lesson 2 • Statutory Reporting Obligations
Explains when and how to report chemical incidents, occupational diseases, and dangerous occurrences to regulators. Timely reporting is a legal duty and supports national hazard data.
Lesson 3 • First Aid for Chemical Exposure
Details immediate first aid actions for skin contact, eye exposure, inhalation, and ingestion incidents. Prompt correct action limits injury severity before medical help arrives.
Lesson 4 • Planning for Chemical Emergencies
Covers the elements of a site chemical emergency plan, including roles, resources, and communication. Effective planning reduces harm and recovery time when incidents occur.
Lesson 5 • Spill Containment and Cleanup
Teaches step-by-step procedures for containing and cleaning up liquid and solid chemical spills. Correct technique prevents secondary exposure and environmental contamination.
Chapter 8HideHide detailsSee detailsCOSHH Program Management and Continuous Improvement
COSHH Program Management and Continuous Improvement
Lesson 1 • Training and Competency Frameworks
Designs tiered training programs matched to worker roles and substance hazard levels. Competency verification ensures training translates into safe behavior.
Lesson 2 • Building a COSHH Management System
Covers the policy, procedures, roles, and resources needed to sustain a compliant COSHH program. A structured system prevents ad hoc compliance and gaps in coverage.
Lesson 3 • Internal Auditing of COSHH Controls
Teaches how to plan and conduct internal COSHH audits covering documentation, controls, and worker practice. Audits identify gaps before regulators or incidents do.
Lesson 4 • Reviewing and Updating Risk Assessments
Establishes triggers and methods for reviewing COSHH assessments after changes, incidents, or scheduled intervals. Outdated assessments create unmanaged risk.
Lesson 5 • Performance Metrics and Reporting
Identifies leading and lagging indicators for COSHH performance and methods for reporting to senior management. Data-driven reporting secures leadership commitment and resources.
Your valid completion certificate
This course is for you:
Site supervisors: responsible for workers who handle chemicals daily.
Maintenance technicians: regularly exposed to solvents, lubricants, and fumes.
Healthcare support staff: working near disinfectants, biological agents, and lab chemicals.
Construction tradespeople: encountering dusts, adhesives, and hazardous coatings on site.
HR and compliance officers: building workplace safety programs without a technical background.
Career changers entering health and safety: needing a credible foundation in chemical risk.
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