The bag (10,10.1) has a terminal (12) for filling the bag casing with additive (Z) and a terminal (14) for removing additive. A suspension unit (20) is positioned in a hanging up position (A) such that a gravitational force-side supply of the additive is taken place in terminal (14). A removal arrangement (100) is provided to remove the additive from the bag casing and fluid-connected with the terminal (14). A hypodermic needle (100.5) is provided in the removal arrangement for dosage into a base product and is sterilized before filling the bag casing with the additive. An independent claim is included for method for filling bag.
