Rührereinbauhilfe und Verfahren zum Einbau eines Rührorgans in einen Bioreaktor

Verwendung einer Hülse (12), die einen zwischen ihren axialen Enden (13, 14) verlaufenden, von gegenüberliegenden Flanken (16, 16', 16'', 17, 17', 17'') der Wandung (18, 18', 18'') begrenzten Schlitz (15, 15', 15'') aufweist, als entfernbare Rührereinbauhilfe (11) zum Positionieren eines Rührorgans (7) an einer Rührerwelle (4) eines Bioreaktors (1). A bioreactor has a stirrer shaft that is driveable by a drive and on which a stirrer element is positioned. The position of the stirrer element is determined by a stirrer installation aid. The stirrer installation aid has a free end with an abutment surface on which the free end of the stirrer element abuts. The stirrer installation aid is designed as a sleeve that comprises a slot extending between the axial ends of the sleeve. The slot is delimited by opposite flanks of a wall, and the sleeve is placed on the stirrer shaft. The stirrer installation aid can be pulled off laterally from the stirrer shaft. A method for installing the stirrer element on the stirrer shaft arranged in the bioreactor also is provided.