This screen can be accessed via 'Go to - Substance '. Choose a substance and place this screen in edit mode by using the pencil. On the tab 'Classification' the H-phrases can be linked to the current substance by using the button 'New' above the overview 'H-phrases'.

After opening the screen you can select one or more H-phrases in the H-phrase overview by checking the checkbox at the beginning of the line. You can filter the overview via the search field. Any selected H-phrases remain selected if you enter a new search term. Once you have selected all the H-phrases you wish to associate with the substance you can actually associate them with the substance using the 'Add' button at the top right. The H-phrase overview will be rebuilt and H-phrases that have already been linked will no longer be visible.

When you have linked all H-phrases to the substance you can close the screen by clicking on the 'Close' button. The H-phrases will become visible with the substance but have not yet been linked. Only after clicking on the button 'Save' the H-phrases will actually be linked to the substance.