for experiment in the 1lbioreactor,consisting ofextension plate for apparatusholder with fixing magnetsto hold magnetic stirrer, miniand holder for bioreactorca. 19x19.8 cm, with 2 hooksand magnets to fit to the holesin the panel, aditional fixingby spring plugs on the rearpossibleboth elements are made of sheetsteel, powder painted, goodmechanical and chemicalresistance