Product Overview

Summary: This Chemical Mixing Safe Operating Procedure provides a clear, step-by-step framework for safely preparing, decanting and mixing chemicals in Australian workplaces. It helps you control exposure risks, prevent dangerous reactions and meet your WHS obligations, while keeping production efficient and consistent.

Chemical mixing is a routine task across manufacturing, laboratories, agriculture, maintenance and many service industries, yet it carries some of the highest potential for serious incidents if not tightly controlled. This Chemical Mixing Safe Operating Procedure sets out a practical, repeatable method for receiving, storing, preparing and mixing chemicals, with a strong focus on hazard identification, safe handling, segregation and emergency response. It translates complex WHS and hazardous chemicals requirements into clear, worker‑friendly instructions that can be followed on the floor, in the shed or in the lab.

Developed for the Australian regulatory environment, this SOP helps your business manage the full lifecycle of chemical mixing activities: from checking Safety Data Sheets (SDS), verifying container labels and selecting the right PPE, through to controlling ignition sources, ventilation, decanting, dilution sequences and waste disposal. By implementing this procedure, you reduce the risk of burns, poisoning, inhalation exposure, fire, explosion and environmental releases, while also improving batching accuracy and product quality. The document supports training, on‑the‑job supervision and audit trails, making it easier to demonstrate due diligence to regulators, clients and insurers.

Key Benefits

• Ensure compliance with Australian WHS laws and hazardous chemicals requirements when handling and mixing substances.
• Reduce the risk of chemical burns, inhalation injuries, fires, explosions and environmental contamination.
• Standardise mixing practices across shifts and sites, improving product consistency and reducing costly rework.
• Support effective training and competency assessment for workers who handle and mix chemicals.
• Provide clear, ready-to-use guidance for incident response, spill control and first aid related to chemical mixing.

Who is this for?

• Production Supervisors
• Laboratory Technicians
• Warehouse and Storepersons
• Maintenance Technicians
• Process Operators
• WHS Managers and Advisors
• Chemical Handling Trainers
• Facilities and Operations Managers

Hazards Addressed

• Chemical burns to skin and eyes from corrosive liquids and powders
• Inhalation of toxic, irritant or sensitising vapours, mists, gases and dusts
• Fire and explosion arising from flammable or oxidising chemicals and incompatible mixtures
• Release of hazardous fumes or heat due to incorrect mixing order or concentration
• Pressure build‑up and container rupture from exothermic reactions or gas generation
• Environmental contamination from spills, leaks or incorrect disposal of chemical mixtures
• Manual handling injuries from lifting and pouring heavy drums, bags and containers
• Exposure due to poor labelling, decanting into unmarked containers or misidentification of chemicals

Included Sections

• 1.0 Purpose and Scope
• 2.0 References, Definitions and Abbreviations
• 3.0 Roles, Responsibilities and Competency Requirements
• 4.0 Required PPE, Tools and Equipment
• 5.0 Chemical Identification, Labelling and SDS Review
• 6.0 Pre‑Mixing Risk Assessment and Permit Requirements
• 7.0 Storage, Segregation and Handling of Chemicals Prior to Mixing
• 8.0 Step‑by‑Step Chemical Mixing Procedure
• 9.0 Controls for Ventilation, Ignition Sources and Static Electricity
• 10.0 Spill Management, Waste Handling and Environmental Protection
• 11.0 Health Monitoring, Exposure Controls and Hygiene Practices
• 12.0 Emergency Procedures, First Aid and Incident Reporting
• 13.0 Cleaning, Decontamination and Equipment Maintenance
• 14.0 Training, Induction and Competency Assessment
• 15.0 Document Control, Review and Continuous Improvement

Legislation & References

• Work Health and Safety Act 2011 (Cth and corresponding state and territory legislation)
• Work Health and Safety Regulations 2011 – Chapter 7 Hazardous Chemicals
• Safe Work Australia – Code of Practice: Managing Risks of Hazardous Chemicals in the Workplace
• Safe Work Australia – Code of Practice: Labelling of Workplace Hazardous Chemicals
• Safe Work Australia – Code of Practice: Preparation of Safety Data Sheets for Hazardous Chemicals
• AS/NZS 2243.10: Safety in laboratories – Storage of chemicals
• AS/NZS 1715: Selection, use and maintenance of respiratory protective equipment
• AS/NZS 2161 series: Occupational protective gloves
• AS 1940: The storage and handling of flammable and combustible liquids