Choose from 5 options:
Step 4: Work out your introduction's risk to human health
To be able to finish your categorisation you need to work out the risks of your introduction to human health and the environment.
In Step 4, you need to work out the human health risk of your introduction - is it medium to high, low or very low? To work this out start at 4.1 and continue as far as you need to through each step.
Once you have your answer for human health, move to step 5 to work out the risk to the environment of your introduction.
At Step 6, you'll combine the human health risk and environment risk for the final category of your introduction.
- You are at Step 4.1 because you've ruled out Steps 0, 1, 2 and 3 of the categorisation process.
- This step relates to introductions that are internationally assessed for human health. If you are not using an international assessment, go to Step 4.3.
- There are 4 human health exposure bands — exposure band 1 has the lowest level of human exposure and exposure band 4 the highest level. Follow steps on this page to work out your human health exposure band.
- A chemical has a human health hazard characteristic if the chemical can cause damage, harm or adverse effects to humans. Find out what you need to do to establish the human health hazard characteristics of your chemical, including when you can refer to our List of chemicals with high hazards for categorisation.
- Use the on this page to work out your indicative human health risk by using your human health exposure band and the human health hazard characteristics that your chemical does or does not have. On this page, you'll be able to work out if the human health risk of your introduction is medium to high, low or very low.