A medical fluid bag rack to be inserted into a scale pan of a weighing apparatus and to hang up bags containing medical fluid, wherein the fluid bag rack , extending in a direction of its height (H), in a direction of its length (L) perpendicular thereto, and perpendicular to the two directions mentioned above, in a direction of its width (B), respectively comprises: - at least one base section ; - at least one bag rack arm extending from the base section , wherein the at least one bag rack arm comprises one or more hooks for hanging up one or more fluid bags; or consists thereof, characterized in that the fluid bag rack further - comprises at least two support arms extending from the base section , wherein at least two of the support arms are connected, respectively, to the base section at or on sides lying opposite to each other, or extend as one piece or integrally therefrom, wherein at least one of the support arms comprises two lateral struts for supporting the fluid bag rack by means of upper sections of the lateral struts (5a, 5b, 7a 7b) on upwardly extending lateral surfaces of the scale pan while preventing rotation or tilting of the fluid bag rack about an axis running in the direction of its width (B), which are spaced from one another by an open gap or an enclosed passage area or passage opening . in a direction of its length (L) perpendicular thereto, and perpendicular to the two directions mentioned above, in a direction of its width (B), respectively comprises: - at least one base section ; - at least one bag rack arm extending from the base section , wherein the at least one bag rack arm comprises one or more hooks for hanging up one or more fluid bags; - at least one base section ; - at least one bag rack arm extending from the base section , wherein the at least one bag rack arm comprises one or more hooks for hanging up one or more fluid bags; or consists thereof, characterized in that the fluid bag rack further - comprises at least two support arms extending from the base section , wherein at least two of the support arms are connected, respectively, to the base section at or on sides lying opposite to each other, or extend as one piece or integrally therefrom, wherein at least one of the support arms comprises two lateral struts for supporting the fluid bag rack by means of upper sections of the lateral struts (5a, 5b, 7a 7b) on upwardly extending lateral surfaces of the scale pan while preventing rotation or tilting of the fluid bag rack about an axis running in the direction of its width (B), which are spaced from one another by an open gap or an enclosed passage area or passage opening . - comprises at least two support arms extending from the base section , wherein at least two of the support arms are connected, respectively, to the base section at or on sides lying opposite to each other, or extend as one piece or integrally therefrom, wherein at least one of the support arms comprises two lateral struts for supporting the fluid bag rack by means of upper sections of the lateral struts (5a, 5b, 7a 7b) on upwardly extending lateral surfaces of the scale pan while preventing rotation or tilting of the fluid bag rack about an axis running in the direction of its width (B), which are spaced from one another by an open gap or an enclosed passage area or passage opening . wherein at least two of the support arms are connected, respectively, to the base section at or on sides lying opposite to each other, or extend as one piece or integrally therefrom, wherein at least one of the support arms comprises two lateral struts for supporting the fluid bag rack by means of upper sections of the lateral struts (5a, 5b, 7a 7b) on upwardly extending lateral surfaces of the scale pan while preventing rotation or tilting of the fluid bag rack about an axis running in the direction of its width (B), which are spaced from one another by an open gap or an enclosed passage area or passage opening . <EOS>