Material: chrome-nickel steel. The holder is attached to a stand assembly and is used to suspend and hold flat flange vessels.Reaction vials can be operated and tempered in a wide variety of ways. To avoid moving the reaction apparatus during the experiment, the flat flange reaction vial should ideally be suspended from a stand assembly by means of a suspension device. Cooling and heating media can thus be flexibly fed to the reaction vial from below and removed again. For use with flat flange vessels and lids For fixed suspension of the lid and the flat flange reaction vial on a stand assembly Holder for flat flange reaction vials Delivery without stand assembly.