Direct answer: Select and document the correct GHS 7 mixture method for each endpoint.
Confirm the complete formulation
Use concentration ranges, active content, impurities, stabilisers and physical form for the marketed product.
Check mixture evidence first
Where suitable product test data exist, determine how GHS 7 uses that evidence for the particular endpoint.
Apply endpoint-specific methods
Acute toxicity, skin or eye effects, flammability and environmental information do not share one universal formula.
Handle ranges conservatively and transparently
Record the concentration selected for assessment and why it represents the relevant worst case.
Recalculate after changes
Supplier grade, active content or concentration changes should reopen affected endpoints and linked output.
Practical example
A cleaning concentrate contains corrosive ingredients within ranges. The reviewer assesses the worst-case composition for each relevant endpoint and documents why the final mixture category applies.
Release checklist
- Verify full formulation
- Find product test data
- Choose method per endpoint
- Document range assumptions
- Reassess on formula change
Common mistakes
- Concatenating ingredient H-statements
- Using one equation for every hazard
- Ignoring active-content differences
Frequently asked questions
Can ingredient hazards be copied to the mixture?
No. Apply the relevant mixture criteria and evidence.
Are concentration ranges acceptable inputs?
They require a documented assessment value and uncertainty handling.
Does dilution always lower category?
Not automatically; endpoint rules, pH, reserve capacity and other properties may matter.
Should supplier grades be distinguished?
Yes. Different grades can change the effective hazard contribution.
Primary sources
Review notice: AUSTRALIAN REGULATORY AND JURISDICTIONAL REVIEW REQUIRED BEFORE INDEXING.