A Mixture and the links to assigned Substances can be changed and the entire Mixture can be deleted if not used anymore.
To change a Mixture, open and edit it as described in chapter D.7.2 Creating and populating a Mixture dataset. You can de-assign any Substances or assign other Substances to a Mixture any time (see chapter D.7.3 Assigning related Substance(s) to a Mixture).
To delete a Mixture
Go Home to the Task panel if you are not already there.
Under Mixture , click Update.
In the Query results pane, right-click the Mixture to be deleted and from the menu displayed, click the Delete command.
If a Mixture is deleted, the name of the Mixture displayed in section 0.3 Mixtures of any associated Substance will automatically be deleted, too. Apart from this, changing or deleting a Mixture does not have any impact on the associated Substance datasets.