How should items containing propellant be handled in the BASTA system?

When classifying aerosols, according to ECHA Q&A 1456 (searchable here: https://echa.europa.eu/sv/support/qas), sometimes the product must be classified by taking into account the propellant gas and in some cases not.

Case 1: If the propellant remains in the container during use, only the contents of the liquid must be taken into account when classifying. In practice, this means that you have to recalculate the liquid contents of the total product to a "new product" where the propellant contents are excluded.

Case 2: If the propellant gas is completely or partially released from the container during use and is completely separated from the liquid, the product must first of all be classified with respect to the contents of the liquid (as case 1) but also take into account the separate contents of the propellant IF these are classified as health- or environmentally hazardous.

Case 3: If the propellant is released in whole or in part during use but is NOT separated from the liquid, then the entire content of the aerosol must be taken into account when classifying (ie levels are counted as a "regular" chemical product).